Hello ! i'd like to present a little suggestion here.
The one and only arena that the game currently has is a bit repetitive and dull,
It used to vary in sizes at least in the old version.
What if occasionally there was a continuously looping arena without any edges, that would just scroll along with the players as they moved, and the max distance between players would be capped.
This would create some interesting fights for sure,
The battles would randomly take place in this arena from time to time, and teleport range would probably have to be limited somewhat.
Just a little something from the top of my head
Cheers.