I have noticed a small issue with "key bosses". The problem seems to be that almost anyone can start a match in the kiosk, even if they don't possess a key. This wouldn't be an issue if everyone was thoughtful, and used manners, but sadly this isn't the case. I have joined multiple matches to assist someone, to only listen to them whine about not having a key. I have heard many other players complain about this also. I think a simple change requiring that the match creator possess the needed key would go a long way to help this issue.