I want to suggest that once colony building comes out the developers turn on collision for the scatter on the various celestial bodies. Having the rocks (and trees on kerbin) have collision would bring slightly more challenge to landing on each planet or moon and would make driving around on rovers and such more realistic. I don't like driving straight through a giant bolder on the surface of Duna, even if it makes the trip a little quicker.    This raises the question: "Why wait until