I have long thought that
Doomsday's Evacuation Protocols edict should be replaced with a planetary decision, designed in such a manner that it helps an AI player reliably escape its homeworld if it has found any other acceptable world. While the edict's modifiers are slightly helpful, they do not change the fact that an
evacuation currently requires a LOT of micro-management.
(The edict's modifiers also kind of seem like bonuses that would feel natural as permanent bonuses of the Doomsday origin. The civilization would have a cultural and administrative heritage of packing up and leaving when it becomes necessary. It should be a part of their "societal DNA", as their post-FTL society was effectively organised around that purpose.)
In my opinion, a planetary decision to evacuate a world should effectively
automate the evacuation process.
- Greatly increased automatic resettlement chance, and reduced resettlement cost.
- Nullified resettlement destination chance (nobody should move there voluntarily).
- Nearly instantaneous demotion of unemployed pops.
- Pops leave their current jobs, unless it causes an output shortage (global or local);
pops do not take new jobs, unless it helps alleviate such a shortage.
- This could perhaps be handled as an automated deprioritization of jobs that no longer need to be performed on this world (it seems excessive to make each pop think long and hard about their role in the economy before making job decisions).
- Unused buildings/districts are automatically removed/recycled.
- If the Civilians lack any valid resettlement target, they instead depart via the refugee system (so you better make sure other worlds have room for them, because the Civilians might not wait for very long before taking their destiny into their own hands).
The way the above would play out, I imagine, is that:
- There exists at least one suitable other world that already has, or gradually acquires, the ability to hold the pops and produce the outputs of the old world.
- Civilians begin flowing to the other world as soon as possible.
- Research jobs are among the first to be emptied / stop receiving Workforce, since there is no potential deficit there (locally or globally). Depending on global Unity expenditures, Unity jobs may also come early - or later in the process. Something similar goes for Alloy jobs, Consumer Goods jobs and other refined output jobs. As the supply side of the economy shifts to the other worlds, the resource jobs of the evacuated world are drained of labour.
- As the number of pops on a world declines, the local need for Amenities and Law Enforcement goes down, and those jobs can be reduced too.
- Eventually the last pops have become Civilians, who finally leave their old home.
- The world is abandoned, and the last remaining buildings and districts are removed.
The cost of the planetary decision should be Unity, since it would be the most consistent with other game systems - it is just another kind of resettlement. It adds neither territory nor new pops, and should therefore not cost Influence.
While the above is primarily written with Doomsday in mind, it should apply equally well (but probably much smoother) to vacating undesired colonies. Evacuation Protocols like this could also be used later in the game, to save pops from approaching crises and genociders. The suggested point of allowing evacuees to become refugees, if there is no valid resettlement target for them, would be especially flavourful in situations like that - and in case of the Doomsday origin, which could allow failed homeworld evacuations to still spawn some surviving diaspora.
Evacuation Protocols could perhaps also be locked behind a technology (new or existing), which could also be a guaranteed research option for Doomsday empires.