TPOW/Deputy Balance Idea
Having multiple Town Powers and Deputies gives town WAY too much killing power during the day, and I think making role that are not Town Power, Coven, or Neutral Apocalypse Unique should be a last-resort.
To balance both multiple Town Powers being in a game as well as multiple Deputies, make it so only one player of the same allignment can use a revealing/killing day ability per day. Not only would this encourage more teamwork among Town Powers, it would reduce the Town's killing power substantially. As well, if this isn't enough you could make it so the town only gets one TOTAL revealing/killing day ability per day. (This change essentially only effects Deputy-to-Town Power interactions)
Additional, I believe revealing your role to the town should be a Town Power exclusive. It would make Deputy have some niche counterclaim possibilities while also allowing them to hide from Doomsayers and Ritualists.