Ok I found an 8p game that might be worth playing, which apparently has an exact 50% EV, mathematically speaking; though scum have 70% success in the ten games played, so make of that what you will...
http://wiki.mafiascum.net/index.php?title=True_Love
True Love
2 Mafia Lovers
6 Town Lovers
Mechanics
Nightless
Lovers are divided into four pairs. Both scum are individually paired with a town player.
Lover pairs do not know their partner's alignment.
Mafia have a private daytalk quicktopic
Lovers have a private daytalk quicktopic