If I ever a) nut it out enough and b) get up the courage to do so and c) they don't do it first I might suggest a "neutralise" thing for between upvote and downvote, for when you have "disagreement with rewards" ore some other mid-range kind of feeling but a downvote seems a bit over the top, which skims post payout but doesn't affect reputation XD (however they're going to be doing that over there).