I think that it may be in our favor just to ban CB. It seems as though everyone's sorta working together since (as far as I know) no one knows anyone else's role or group except for the person that has Ash. Because of that, banning everyone that comes up as "Mana" just may be the best way to do things. I mean if someone is labeled "Mana" we should just automatically assume they're the real "Mana" or else we run the risk of unbanning the real "Mana" which is probably the most confusing damn role in this whole game. Plus if we're wrong then at least we're one person closer to finding the real "Mana".