each of the small pulp fiction sections of lemuria would make fantastic full blown worlds - and since the old one supposedly snatched small chunks of various worlds, there could very easily be massive worlds where each of the small chunks came from.
I would love to see that happen - we don't have to keep saving the spiral all the time. We COULD just get an assignment to go to X world and help with some sort of local issue that only affects that world after all.