My game will be a no-QuickTopics/private-PMs game as well, so that should help cut down on the risk of mass-claims.
I'm thinking something like the Necromancer from the Wizards game, utilizing the deadchat. And someone who can initiate QuickTopics as their night power.

When I was a wolf in the X-Men game, I found it kinda fun to try to figure out the likelihood of what roles were used or not. Admittingly, there were probably 5-10 roles extra there. In the Wizards game, there was 1 extra role, which made a fake claim unsafe until late game.