Standard MS Ruleset... a starting point.

[Tamuz]

11 wouldn't work too well because there is the assumption of non power role if the character comes in. This happened in a newbie in, as My Stoofer and Halfpint may remember. Stoofer's re-introduction into the game all but sentanced myself and my mafia partner to death. With 1 more assumed innocent townie because he came in pretty much took out the scape goat I was going to use that day. In essence I don't think people should ever be able to come back in unless they were replaced before a role came in. (pre-game)