Hi, this might be just an opinion based on games where their aren’t enough players, but it seems that the Cult has to be Super lucky, have an evil or neutral King and get the right players mislynched etc. to even have a hope of winning. This is mostly due to the fact there are so many BD roles that are cult conversion immune (Priest, Paladin, Prince, King…) which means if the cult is down to one or two players with just a king, prince and Paladin alive they are screwed.
Not only that, but the Cult have to deal with a much stronger investigative than Black Rose. The Sheriff can be Counter Claimed more boldly than the Paladin as the Sheriff cannot directly kill any Black Rose it finds, whereas the paladin can.
I honestly feel that the Paladin and Sheriff should swap abilities - perhaps you’ll need to rename the Sheriff - but ultimately I think this is something to consider.