[@ClocktowerEchos]

Works for me. 



I suggest though that we move the concept to more abstract terms: Like civilization momentum. The longer a colony is on a planet- the higher its bar fills up. Representing general growth. It gets bigger faster for being in wars and taking land. 

But you have a chance of being destroyed in a war as a side effect. 

This way. We an play as weird races, like. Collective hive mind blobs. or normal humans. Without having to make special rules for their personal ecology and civil life cycle. That and we have incentives to do otherwise destructive things.