Ah Ive ran games before off site, and I get obsessed with balance, tweaking things for days until it sits right. Thing is I like dumb roles, like PGO, CPR Doc, Dentist ect, I just know some sites get annoyed by them (same with hidden abilities, like a priest with Xshot resurect can't cast a hammer vote but he doesn't know that, or an inventor can make items to mail people but doesn't know what they do.)
An in joke of mine is "lynch all jesters" even though I would never use that role (Jester: You win the game if you get lynched) as it's too easy to win with them.
I'm currently developing a new set up anyway, as the vampires one I was going to run was a little boring.
I will say I usually don't mind any role being in a game. EXCEPT: Some 'bastard' mods on mafiascum.net do things like put a deputy into a game (becomes a cop when the cop dies) but doesn't put a cop into the game.
I also saw a game where one guy had a quad-vote ability, double vote/triple vote is cool, but 4x votes is just silly. Mid/late game you can lynch someone by yourself.
Heh, I just thought of something that would be fun: Pathological Liars!! They could be of any alignment (they can't help themselves, after all), they could start out that way, be turned that way, or have a temporary (1 day) bout of it. The only stipulation would have to be that in every post they make, they must tell at least 1 lie. It would be a total pain to mod that, but sounds like a fun concept! Has anyone experienced a role like that?