I've seen, on many occasions, client users flying out of the lobby gladiators. I'm not exactly sure if there is anyway to leave the arena once you have entered. I am proposing putting some sort of boundary or even blocking off the top area so people can't fly through. I'm not exactly knowledgeable on how these client users fly through; Whether it be by just putting on flying and going out of the arena or if there is something more complicated to it. If there is already a border there (Which I believe there is due to people being able to look down at the matches going on) then maybe just a boundary. For example, if you walk far away from the arena it sends you back to the starting position or even kicks you out completely(Since a normal player wouldn't being going outside of the arena). I believe this would make it much easier for the other none client using player to get out of the arena as fast as possible instead of forcing them to stay there.