Alright so my idea for the Salem Witch Trials is this:
With the thought that there is only about 6 players, there would be one witch, two judges, one nurse and two townsfolk. Every night the Witch would kill one person and the two judges would take one person in for questioning. The next day the townsfolk would vote whether they felt that person was guilty or not. The same person could be chosen each round by the judges if they felt sure it was that person.
There could instead be that the judges chose two people and the townsfolk eliminated one of them the next day which might actually make it more crazy.
This would mean the judges would never be chosen by themselves and the only way they could be eliminated is by the witch. It would definitely work better with more than six people but it could work with just six.
It's just an idea, plus I like the Vampire one. Since it is October we should do some Halloween themed versions :D