This would be brilliant!
Give 1 week notice of unbanning to be sure to get maximum returns, make it a 48 hr return and then baam re ban them all at once just because.
Like when you were a kid and set off fireworks in your neighbors metal garbage can, inside his garage, with the door closed at lots of dry wood laying around because wood working was his hobby after his wife died and its all he has to take refuge in... Ive said too much.