Luckay, I think you should implement synergistic bonuses into your system at some point. Like the traditional seer/angel example, having a game with both a seer and an angel (especially a full-effectiveness angel) is going to be worth more than both a seer by itself and an angel by itself, since the seer gets its peeks out 100% of the time and angel tells are much thinner than seer tells.
Also, as a point of reference, I tried running this system with Tsukihime:
Goods:
Shiki: Combo seer/vigilante; but kills come at cost of peeks (and vise-versa). 7 points.
Arcueid: Almost invincible, confirmable, can have bonus lynch, high variance character. 5 points?
Ciel: Straight vigilante. 3 points. The odd death rules end up being a wash, imo.
Akiha: Extra vote, one-time bonus lynch, confirmable. 3 points.
Hisui: Confirmable, 2 points.
9 vanillias: 9 points.
Bads:
Roa: lol important. Extra kills, extra death. 10 points.
Kohaku: Has several good one-off abilities. 8 points.
Walachia: Like Kohaku, but weaker (since he only gets the powers from whoever dies). 6 points.
Mech-Hisui: Acts like a weak evil seer, 5 points.
29/29. I design goot.