So a while ago someone came up with a good idea, but apparently it went against "free will" so I came up with a solution. As soon as one arena ends everyone is automatically entered to be in the next arena. They are given random names, and can change that name whenever they want. There will also be an option to collect your join bonus XP whenever you want. Here's the part I think some people are gonna love. You may back out of arena at any time you want as long as it has not started yet. Doing this will make your name readily available again, and you will lose the amount of XP you got as a join bonus. If you leave then decide you want to go back, you can just rejoin. This will maximize battle arena participation, and keep players free will at the same time.