I have to say, I was getting worried about the implications that features like mute would have to legit accusations. You're idea seems like a fair balance for free speech. People should be able to put their reputation on the line to back up an accusation or other unpleasant information but the community should also be able to ostracize people who repeatedly cry wolf without acknowledging they where wrong. I think your idea would also incentivize would-be-accusers to get their case in order and post their proof and engage in debate with civility and take criticism with humble grace. please accept my upvote for your constructive contribution :)