Yes... I know that right now implementing such thing would cause additional problems which would need to be solved, and it is more "empty talk" from my side :( Also another problem would be that most of colonisable planets are Volcano worlds - if Gizureans would get most of them suddenly over 50% than it wouldn't be to good. So propably the way how diffrent types of planets are being created should also be changed in such situation.
Oh, don't get me wrong. The idea has been proposed in various forms, several times in the past. I agree that it would be well worth it to rework the habitability/quality and migration/immigration mechanics. However, it's something that can't be done in bits, as I see it, and will likely require more testing and balancing than Matrix is willing to commit to.
I'd love to see it - but I'm not holding my breath. It took about a year of moaning and griping to get Erik to agree to look at blockade mechanics. Knock on wood.
“That which can be asserted without evidence, can be dismissed without evidence.” ― Christopher Hitchens