Instead of outright banning a user for something trivial, why not just hand out an infraction?
Each person will post a reason for infraction for either the user or the post above them, and the point value of the infraction. So a reason for me might be "3 points for impersonating a legendary Pokemon".
(The main difference between this and the "banning" thread is that you have to give a point value. So nothing like "^ was infracted for doing such-and-such thing" - that kind of stuff goes into the "banning" thread. There has to be a point value.)
And of course, as always, there are no actual infractions being handed out. ^_^