I'm concerned we're going to have a real problem this game with evil players role claiming. I suppose we have two tactics we could try:
1: If a player role claims at lynch time, we still kill the fucker anyway. If he turns out to be a good player, then at least we know he was legit and it will prevent other Evils from role claiming his specific role.
2. We keep the player alive, hoping he is indeed a villager and get the Seer(s) in the game to check him. I'd think the Evils in the game would want to add as much confusion as possible and keep the fairly low key PV's in the game. They'd only ever kill off the important roles.
Any other suggestions?