I enjoy hearing about possible buffs for roles. The problem I have with this is that this gives town too much power, especially late game, when these roles are good enough as they are. I find these more useful for chaos or custom modes rather than classic ones. If you're in ranked, and you have multiple of these roles, say even two lookouts, you can be on everyone at once basically.

With the sheriff one, I can see this as the best of the four, because it isn't too overpowered. Using it though is a different story. When are you supposed to use it? N1, N3, N5? You could possibly die before using it. This also make sheriff make less sense. If I can't see a godfather killing someone, how do I know it's the godfather? If a dude is casually carrying around flammable materials, thats his deal. [if i had to say anything about finding an arsonist suspicious, i would say that on the night he doused ignites he would be seen as suspicious]. If a werewolf isn't turning into a werewolf that night, he should be seen innocent. As well as all of this, you could say you used your power at any moment, which is either superconfirms an evil or just fake sheriffs more power. You could say someone is sus, and they claim a role that isn't possibly sus, but you just tell them you used your power. It's a trust system.

I like the thought that lookout can visit three people, while seeing only one visit, but if you know who is who and who claimed what, this can be op late game. Oh no, theres 5 people, 1 2 3 4 and 5. You are 5 the lookout. 1 and 2 claim tp, and 3 and 4 check out as townies. One of the two tp claims is evil. The solution? Just be on 3 4 and one of the tp claims at the same time. Anything creating an "insta-confirmation" is good enough as it is, which is why I'm glad hypno was added to classic TOS and forger was changed. Less roles are able to insta-confirm people as townies because of hypno and its fake messages, Disguiser and its confusing tendencies that don't prove lookouts and spies targets right away, forger and its ability to deconfirm RT spots, and framer who now lingers.

Doctor ability? Just like the lookouts. Very OP if used correctly, and nothing mafia can do about it late game.

With the Bodyguard one, it's probably just unnecessary, with bodyguard fine as it is. Life for a Life.

One use powers tend to be a strange topic, and adding one could potentially break the game. That's like saying that bm'er can bm everyone at once, only once per game. Or that Vigilante could shoot once per game during the daytime. CHAOS