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Solved it :D

upload_2016-7-3_1-45-22.png



It a workaround but it doable, have to though create custom initializers for each Fallen Empire (so that it does not effect Vanilla game play or maps)

Within the Fallen Empire Initializer, I created a new country / species there, and then referenced in the system spawn or galaxy map spawn that custom initializer, as you can see below, I just took wherever initially had root and used last created country.

It not the best looking one but it solves it kind of lOl :D

Code:
    system = {
        id = "46"
        position = {
            x = 485.5785
            y = 486.9763
        }
      
        initializer = sol_reapersinit        # Fallen
    }


Code:
    planet = {
        name = "Jarta"
        orbit_distance = 20
        class = pc_gaia
        orbit_angle = { min = 90 max = 270 }
        size = 25
        tile_blockers = none
        modifiers = none
      
        init_effect = {
            save_event_target_as = reaperspawn
            create_species = {
                name = Reaper
                name_list = "reapers"
                plural = Reapers
                class = "FAL"
                portrait = "reaper"
                homeworld = THIS
                traits = {
                    trait = "trait_very_strong"
                    trait = "trait_invasive_species"
                    trait = "trait_hivemind"
                    trait = "trait_slave_traders"
                    trait = "trait_combative"
                }
            }
      
            create_country = {
                name = "Reaper Harvest Dominion"
                type = fallen_empire
                ignore_initial_colony_error = yes
                government = stagnated_ascendancy
                species = last_created
                ethos = {
                    ethic = "ethic_fanatic_collectivist"
                    ethic = "ethic_fanatic_xenophobe"
                }
                flag = {
                    icon={
                        category="masseffect"
                        file="flag_human_29.dds"
                    }
                    background={
                        category="backgrounds"
                        file="00_solid.dds"
                    }
                    colors={
                        "customcolor2042"
                        "black"
                        "null"
                        "null"
                    }
                }
                effect = {
                    set_country_flag = fallen_empire_4  
                    set_graphical_culture = "fallen_empire_02"
                }
            }
        }
      
        init_effect = {
            root = {
                # assigns ethos to Fallen Empire during system initialization,
                # to allow ethics-triggered systems to spawn
            }
            prevent_anomaly = yes
            set_owner = last_created_country
            set_capital = yes
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }          
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            create_pop = {
                species = owner_main_species
                ethos = owner
            }
            random_tile = {
                limit = { has_building = no has_blocker = no num_adjacent_tiles > 3 }
                set_building = "building_capital_3"
                add_resource = {
                    resource = minerals
                    amount = 1
                    replace = yes
                }
                add_resource = {
                    resource = food
                    amount = 1
                }          
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_agri_processing_complex"
                add_resource = {
                    resource = food
                    amount = 1
                    replace = yes
                }              
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_agri_processing_complex"
                add_resource = {
                    resource = food
                    amount = 1
                    replace = yes
                }              
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }          
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }          
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_dark_matter_power_plant"
                add_resource = {
                    resource = energy
                    amount = 1
                    replace = yes
                }  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_ancient_factory"
                add_resource = {
                    resource = minerals
                    amount = 1
                    replace = yes
                }                  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_ancient_factory"
                add_resource = {
                    resource = minerals
                    amount = 1
                    replace = yes
                }                  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_ancient_factory"
                add_resource = {
                    resource = minerals
                    amount = 1
                    replace = yes
                }                  
            }
            random_tile = {
                limit = { has_building = no has_blocker = no }
                set_building = "building_ancient_factory"
                add_resource = {
                    resource = minerals
                    amount = 1
                    replace = yes
                }                  
            }
            create_army = {
                name = random
                owner = last_created_country
                species = ROOT
                type = "gene_warrior_army"
            }
            create_army = {
                name = random
                owner = last_created_country
                species = ROOT
                type = "gene_warrior_army"
            }
            create_army = {
                name = random
                owner = last_created_country
                species = ROOT
                type = "gene_warrior_army"
            }          
            create_army = {
                name = random
                owner = last_created_country
                species = ROOT
                type = "gene_warrior_army"
            }
            create_army = {
                name = random
                owner = last_created_country
                species = ROOT
                type = "gene_warrior_army"
            }
            create_army = {
                name = random
                owner = last_created_country
                species = ROOT
                type = "gene_warrior_army"
            }
            create_army = {
                name = random
                owner = last_created_country
                species = ROOT
                type = "defense_army"
            }
            create_army = {
                name = random
                owner = last_created_country
                species = ROOT
                type = "defense_army"
            }
            create_army = {
                name = random
                owner = last_created_country
                species = ROOT
                type = "defense_army"
            }
            create_army = {
                name = random
                owner = last_created_country
                species = ROOT
                type = "defense_army"
            }
            create_army = {
                name = random
                owner = last_created_country
                species = ROOT
                type = "defense_army"
            }
            create_army = {
                name = random
                owner = last_created_country
                species = ROOT
                type = "defense_army"
            }  
            create_spaceport = {
                owner = last_created_country
                initial_module = "fallen_empire_weapon"
            }
            spaceport = {
                set_spaceport_level = 6      
                set_spaceport_module = {
                    slot = 1
                    module = "crew_quarters"
                }  
                set_spaceport_module = {
                    slot = 2
                    module = "fleet_academy"
                }
                set_spaceport_module = {
                    slot = 3
                    module = "synchronized_defenses"
                }
                set_spaceport_module = {
                    slot = 4
                    module = "solar_panel_network"
                }                  
            }                                  
            create_fleet = {
                effect = {
                    set_owner = last_created_country
                    create_ship = {
                        name = random
                        design = "Omega"
                        graphical_culture = root
                    }
                    set_location = {
                        target = PREV
                        distance = 20
                        angle = 90
                    }
                }
            }
            create_fleet = {
                effect = {
                    set_owner = last_created_country
                    create_ship = {
                        name = random
                        design = "Omega"
                        graphical_culture = root
                    }
                    set_location = {
                        target = last_created_country
                        distance = 20
                        angle = 180
                    }
                }
            }
            create_fleet = {
                effect = {
                    set_owner = last_created_country
                    create_ship = {
                        name = random
                        design = "Omega"
                        graphical_culture = root
                    }
                    set_location = {
                        target = PREV
                        distance = 20
                        angle = 270
                    }
                }
            }
            create_fleet = {
                effect = {
                    set_owner = last_created_country
                    create_ship = {
                        name = random
                        design = "Omega"
                        graphical_culture = root
                    }
                    set_location = {
                        target = PREV
                        distance = 20
                        angle = 0
                    }
                }
            }
            create_fleet = {
                effect = {
                    set_owner = last_created_country
                    create_ship = {
                        name = random
                        design = "Servitor"
                        graphical_culture = root
                    }
                    set_location = {
                        target = PREV
                        distance = 80
                    }
                }                  
            }
            create_fleet = {
                effect = {
                    set_owner = last_created_country
                    create_ship = {
                        name = random
                        design = "Servitor"
                        graphical_culture = root
                    }
                    set_location = {
                        target = PREV
                        distance = 90
                    }              
                }
            }              
            create_fleet = {
                effect = {
                    set_owner = last_created_country
                    create_ship = {
                        name = random
                        design = "Servitor"
                        graphical_culture = root
                    }
                    set_location = {
                        target = PREV
                        distance = 100
                    }
                }
            }              
            create_fleet = {
                effect = {
                    set_owner = last_created_country
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }              
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }          
                    set_location = {
                        target = PREV
                        distance = 70
                        angle = random
                    }
                }
            }
            create_fleet = {
                effect = {
                    set_owner = last_created_country
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Avatar"
                        graphical_culture = root
                    }              
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }
                    create_ship = {
                        name = random
                        design = "Eclipse"
                        graphical_culture = root
                    }              
                    set_location = {
                        target = PREV
                        distance = 90
                        angle = random
                    }
                }
            }
            random = {
                chance = 33
                create_fleet = {
                    effect = {
                        set_owner = last_created_country
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }              
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }          
                        set_location = {
                            target = PREV
                            distance = 65
                            angle = random
                        }
                    }
                }                  
            }          
            random = {
                chance = 33
                create_fleet = {
                    effect = {
                        set_owner = last_created_country
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Avatar"
                            graphical_culture = root
                        }              
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }
                        create_ship = {
                            name = random
                            design = "Eclipse"
                            graphical_culture = root
                        }          
                        set_location = {
                            target = PREV
                            distance = 45
                            angle = random
                        }
                    }
                }                  
            }      
        }
      
        change_orbit = @base_moon_distance

        moon = {
            name = "The Mistake"
            class = "pc_barren"
            entity = "barren_planet_01_destroyed_entity"
            orbit_angle = { min = 90 max = 270 }
            orbit_distance = 5
            modifiers = none
          
            init_effect = { prevent_anomaly = yes }
        }
    }
  
    planet = {
        count = { min = 2 max = 3 }
        orbit_distance = 20
        class = random_non_colonizable
        orbit_angle = { min = 90 max = 270 }
      
        change_orbit = @base_moon_distance

        moon = {
            count = { min = 0 max = 1 }
            class = random_non_colonizable
            orbit_angle = { min = 90 max = 270 }
            orbit_distance = 5
        }
    }
  
    planet = {
        name = "Nearrum"
        count = 1
        orbit_distance = 20
        class = random_non_colonizable
        orbit_angle = { min = 90 max = 270 }
      
        change_orbit = @base_moon_distance
      
        modifier = "pm_ultra_rich"
    }
  
    planet = {
        count = { min = 1 max = 2 }
        orbit_distance = 20
        class = pc_gas_giant
        orbit_angle = { min = 90 max = 270 }
      
        change_orbit = @base_moon_distance

        moon = {
            count = { min = 0 max = 2 }
            class = random_non_colonizable
            orbit_angle = { min = 90 max = 270 }
            orbit_distance = 5
        }
    }
  
    planet = {
        name = "Gremar"
        count = 1
        orbit_distance = 30
        class = "pc_tundra"
        orbit_angle = { min = 90 max = 270 }
      
        change_orbit = @base_moon_distance
      
        modifier = "pm_carbon_world"
    }
  
    planet = {
        name = "Raysha"
        count = 1
        orbit_distance = 40
        class = pc_gas_giant
        orbit_angle = { min = 90 max = 270 }
      
        change_orbit = @base_moon_distance

        moon = {
            name = "Klensal"
            count = 1
            class = "pc_tundra"
            size = 6
            orbit_angle = { min = 90 max = 270 }
            orbit_distance = 5
            modifier = "pm_mineral_rich"
        }
    }
  
    init_effect = {
        random_system_planet = {
            limit = { has_deposit_for = shipclass_mining_station }
            create_mining_station = {
                owner = last_created_country
            }
            create_fleet = {
                effect = {
                    set_owner = last_created_country
                    create_ship = {
                        name = random
                        design = "Sigma"
                        graphical_culture = root
                    }
                    set_location = {
                        target = PREV
                        distance = 20
                        angle = 90
                    }
                }
            }
        }
        random_system_planet = {
            limit = {
                has_deposit_for = shipclass_mining_station
                has_mining_station = no
            }
            create_mining_station = {
                owner = last_created_country
            }
        }
        random_system_planet = {
            limit = { has_deposit_for = shipclass_research_station }
            create_research_station = {
                owner = last_created_country
            }
            create_fleet = {
                effect = {
                    set_owner = last_created_country
                    create_ship = {
                        name = random
                        design = "Sigma"
                        graphical_culture = root
                    }
                    set_location = {
                        target = PREV
                        distance = 20
                        angle = 90
                    }
                }
            }
        }
        random_system_planet = {
            limit = {
                has_deposit_for = shipclass_research_station
                has_research_station = no
            }
            create_research_station = {
                owner = last_created_country
            }
        }
    }
      
    neighbor_system = {
        distance = { min = 0 max = 50 }
        initializer = "fallen_orbitals_1"
    }
    neighbor_system = {
        distance = { min = 0 max = 50 }
        initializer = "fallen_shielded_1"
    }
    neighbor_system = {
        distance = { min = 0 max = 50 }
        initializer = "fallen_orbitals_2"
    }
    neighbor_system = {
        distance = { min = 0 max = 50 }
        initializer = "fallen_orbitals_2"
    }
    neighbor_system = {
        distance = { min = 0 max = 50 }
        initializer = "fallen_shielded_2"
    }
    neighbor_system = {
        distance = { min = 30 max = 100 }
        initializer = "fallen_holy_01"
    }

As you can see I now have Reapers in "Dark Space" lol or rather edge of the Galaxy

Hope this helps, I have not yet fully tested it ie went through each of it planet to confirm if everything spawned but it should be fine.
 
update the above works, however if you wish for it to take over other systems as per normal game set up, albeit I had to use the last_country tag.

But this however messes up any other fallen empries being created after, not to sure why, but it keep on using the first created country i.e Fallen Empire 1,