The system that says "hello there, little user. I see you have failed to deliver your items due to something completely out of your power. You are now banned for life". That's... not a great way to sort people who deserve and don't deserve to be in the event, don't you think? As for the Steam app and escrow, yeah, there's that, a broken thing that brings nothing but an occasional headache, but that's not ScrapTF's fault.