Sorry, It isnt good enought to be in the server
Suggestions:
> You cant put arbitrary form to the arena, IT MUST BE ROUNDED. I reccomend downloading WorldEdit Mod and use //hspehere command to make a big glass sphere around the arena.
> You must put more chests in the arena, there are only few wich ARE IMPOSSIBLE TO OPEN
> Some cornucopia chests, parkour and ship chests are impossible to open.
> You must modify it more, Its very similar as a normal minecraft biome, wich is boring... (Use WorldEdit to help you making structures and buildings)
> The Arena its Small, make it bigger.
> There arent "Spawn Bases" at cornucopia. You must put 24 or 48 (48 if the arena is HUGE, and in your case is very small, so i reccomend you puting 24)
I hope you can apply these changes and make an awesome arena
Good Luck!