Title says it all. They could easily do it with planet and city generators. Also include space, facitons, companions, etc. To be honest I've always wondered what a game liek this would be liek if 2 dev companys teamed up and one worked soley on the ground aspect and the other focused only on the space aspect. It could just be a wild dream, but sounds like a good game to me. If you guys agree or disagree let me know and give your ideas for a game of the such.