Aha! I just figured out how to use my abilities correctly. Maybe game-breaking, too.
I have a passive ability (BP), a minor one-shot (motivate), and a major one-shot (sacrifice).
-Bulletproof keeps me alive until near-endgame
-Motivate was wasted, but I think it was mostly for role flavor
-Sacrifice. Hoo boy. As a
day action
, I can sacrifice myself. This DOES NOT END THE DAY, as it says can be taken back up until the hammer. My sacrifice would be a party that lasts until dawn...completely skipping the night phase. No scum kills, but no Town night actions either. Hence the major drawbacks I wasn't sure about.
HOWEVER, near endgame (when there's maybe six or seven people left), I can use my ability. Most of the time, there's damn few Town PRs by that time, because they've all been hunted down for small PR-slips. It would have much more impact against scum at that point.