but, as ethereal pointed out, leader doesn't serve a very specific purpose -- at least in hollywood illusions. It doesn't really add to the setup. It just so happens that votes are invisible. I don't think that's a clever role mech and I think town can work around it easily if they're not idiots.
Same with the others. Silencer and fiddler exist to DEPRIVE one person information which isn't actually that great a power. It's stupid. It's easy to come up with codes using the voting so silenced players can give their claims, and fiddled players can just look at the voting logs and sheep; they can't play the game, but that hurts them specifically, not the town as a whole.
And lightkeeper is a joke for unranked. Anonymous speech? Please. It's just chaos; there's no interesting strategy added. I didn't bring lightkeeper up because I thought that was obvious.
Honestly what does leader even add to that setup? It could be pretty much anything else and it wouldn't really make it any more townsided, just less obnoxious.