It would be really awesome if when you downvoted a person, only the down arrow vanished. If you then upvote them, it cancels the downvote and both arrows are th

It would be really awesome if when you downvoted a person, only the down arrow vanished. If you then upvote them, it cancels the downvote and both arrows are there. Likewise, if you upvote someone, only the up arrow vanished and a subsequent downvote would cancel the upvote. Doing either one again would finalize the action and both arrows vanish. This would give you one "oopsie" per comment and not allow people to just mess with the system by repeatedly clicking up/down/up/down.