I still want to be able to build starbases into full-blown colonies. Planets are for primitives.
This would be a particularly interesting element of 'synthetic life'...
But yea, this idea in general could lead the game to be taken in very interesting directions. For example, they could require the mining/destruction of asteroids, planets, stars, ships, humans, etc.
At one point one of the builds had accidentally kept 'thulium' as a resource from dead planets in game, so the idea of non-resource derived resources had at least been considered by SD..