Here's the idea that I had for running Greater Idea with a smaller playercount:
We had rolled up 6 sets of Greater Idea hand-deals and were going to choose one that looked likely to produce balanced results, and then pick the next best one etc. if player choice became unbalanced btw. It looks like there is always some set of choices that could lead to terrible setups, but some are more likely to produce problems than others.
Hey, so I've been thinking (dangerous, I might need to be stopped.)
If you want to run Greater Idea with 10 players or something, the big hurdles are that it's much less likely to create multiplayer scumteams, rather than multiple 1-player scumteams, and that multiball is pretty dang hard to balance at 10 players even if you were trying really hard, much less randomly.
So what if you ran it with a smaller playercount, and the modification that all non-3rd-party scum roles (Aliens/Werewolves/Mafia) would be on the same team?
The scum concentration in the deck might be a little high, but that could be fixed by pre-rolling some setups and choosing among them as we did before. (Or just truncating the ones already rolled.)
It'd be fun to leave the names as they are, so an Alien, a Werewolf, and a Mafioso walk into a bar and plot the destruction of town.