That would be pretty dang useful! Yea, we've gotta be pretty fine grain on setting the votes now.
I do understand the temptation. I might even have to stop upvoting myself with full power (we'll see..this ones pretty ingrained) on posts via that little tick box. But yea..I don't upvote my own comments outside that rare occurrence where there's a special reason to do so.
It's way more fun voting on other people stuff imo. :)