Thanks for the quick reply.
Seeds: 5628783, 563593, 420454, 2755295, 8983622, 47, 589392, 42424242, 33369991, and generally lots of random number tapping. Outside of the Moon issue (and the really low asteroid counts, though I'm guessing this is more due to memory concerns than being unrealistic) everything is great, I especially like the ability to add content from planet packs.
I'm gonna test if my current cludge of using the previous Galaxy gen with the current files is a viable temporary fix.
Update: Kopernicus seems to be screaming bloody murder at the results of my experiment, so it looks like I'll go moonless for a while.