Reclaiming the Earth

I've always thought that this would make for a very interesting cross over campaign and since my Gamma world rule set is 100% compatable with the star Frontiers (URS) project would make for an excellent campaign. Pure strain humans from the colonies of the moon, mars and jupiter return to earth to reclaim it from the survivors of the last war.<br /><br />There would be very few energy weapons, or defenses in this campaign, with more emphasis on PGS weapons, and only humans, and Gamma World type characters allowed. while at first this might seem like a more straight forward Gamma World campaign the inclusion of space craft and the colonies make Knight hawks rules a necessity. so what do you think of this idea?