Minor race assimilation traits.

[Wayz]

If I purge minor races from my systems ( I have been migrating them to an unwanted system and them decolonising the system via a mod ) as frankly my faction population provide better bonuses, do I lose the assimilated minor factions trait with them?

[Freny]

No, but you might want to look into their collection bonuses, some of them are pretty awesome (the get 20 or 30 units of a population type bonuses).

Collection bonuses aside, in my opinion purging population is a losing strategy, but to each its own. If you are out of room, you need to make room by expanding or conquering (or terraforming).

[Bozobub]

It's totally possible for your own race's pops to be vastly superior, BUT (as Freny noted) you are also forgoing a lot of population collection bonuses, some of which are damn strong. Additionally, there's no need at all for a mod to leave a system "fallow"; there's tech in the "Vanilla" game that already does this.

[Wayz]

I took frenzy's advice and started a new game playing vaulters and have been tailoring worlds for the minor race populations instead of purging them and terrafroming for my own. Both ways work well but this is less work I guess.

[Freny]

There is always going to be some population micro the way the game is designed, minor pops are an integral part of the game, some races mechanics are totally dependant on having a minor civilization reasonably close by. Cravers pop micro gets crazy, then there are other races with zero pop micro, like with The Choir, or with The Church.

Using the Empire screen, one can click on the population icon and a window with that system's planets and pop types appears below. Moving them somewhere else is just a matter of click and drag. You can move pops that way from the same screen, but like I said, I think it is a losing strategy, especially now that Empires can grow more than 1 pop per turn (if you are using the Beta - and you are not playing vs brainless AIs).