Assume D1 = 5town/4mafia. Mafia and Town alike must aim to lynch mafia/Mastermind, or the mastermind will win. Also did you know with mastermind in the mafia meeting, mafia can potentially kill other mafia? >MFW
It looks like a difficult setup, maybe too complicated for a lot of players :P but if Mime says its good, then it probably is. It looks interesting enough.