My suggestions for Kaiserreich for DH after playing over 80 hours and finishing around 10 full games
1.Please expand the German aristocrat puppet system once you take countries as Germany. So far there's France, England, Scotland, Wales, Smaller French States (Normandy, Occitania, etc), there should be more like Russia (Must-have), Austria (Get rid of those Hapsburgs!), Spain (An example of this happened IRL, Napoleon invaded Spain and installed his brother as King of Spain), Italy (It's a decently sized country). Those are the 4 most important ones, although I think smaller countries like Portugal, Netherlands, Greece, Hungary, Sweden, Denmark should also be able to become German puppets, and maybe even Germany invading countries outside Europe and setting up monarchies like the French did in Mexico. Also maybe add events for the German puppets, I really liked the German France under King Francois III idea but when I tried to play it there were very few events except the war reparation ones... Do this not only for Germany's conquests, but also Romanov and add more royal houses, such as Bourbon, Bonaparte, Windsor, Hapsburg, etc. But since this is all big work you should just start small by expanding from the 7 German aristocracy puppets (3 in UK, 4 in France) to around 12 (3 in UK, 4 in France, 2 in Eastern Europe (Russia, Ukraine), 1 in Italy, 1 in Austria if you backstab Germany/Germany backstabs them and Germany wins and 1 in Hungary (Same as Austria but otherway round), maybe later versions add German aristocrats for each Balkan state, Netherlands, Portugal, Spain, etc.
2. Later versions make it so you can use that unused AXI flag that looks like the Nazi Germany one, maybe by selecting certain events. Also make it so you can become German Union, as they get a hugeload of events yet they can only use them if they get conquered/Can't become it like Russia can become Soviets. Maybe expand the system so France can 'unite' with the Algerian France and become Entente or something w/o war (ala peaceful non-communist france), same with Britain.
3. Balance it so there's more events after 1942/43, after those years there were close to no events regarding politics/decisions.
4. Make it so each nation's 'goal' can be achieved somehow/Implement events for small nations becoming important. For example Transamur's description says it's leader wants to rule all of Russia, Serbia's description dreams of a Panslavic Union, Egypt's goal should be to be a Caliphate/Arab League or Federation/etc, Delhi should be able to form India once it beats it's enemies, AOG should be able to form German China if it conquers all of it and should have more events helping the human-player, Greece should be able to form the Byzantine Empire, Mongolia should be able to make Greater Mongolia if it kills Russia, Mittelafrika should get more events relating to them conquering Africa, etc.
5. Maybe add Communist China as a puppet if Soviets take any Chinese country and are able to have a decision to release them.
6. Decision for British puppets as Germany is weird, it should be 1. Total occupation 2. Canada can have that land back if they join us 3. England/Scotland/Wales puppets 4. Great Britain so you basically choose 1. Land is yours 2. You get one of the major ententes as a strong ally but he's not your puppet 3. You get three small puppets 4. You get a big puppet, just like the French occupation which was good imo. PS: The current one is 'Scotland puppet, Scotland and Wales puppets, Scotland England and Wales puppets and Total Occupation', boring -.-
Anyways thanks for making the mod, it's amazing and it seems like you guys worked very hard on it. I hope eventually it becomes so that Germany can achieve world domination and have German Aristocrats governing Sudamerika, Japan, Indien, and... German Amerika

lol