Hm, I really don't want a shitty PvP mode done by somebody with the editor tbh.
And don't forget data-match. You can't play with other people in co-op if they don't have exactly the same version like you. That makes it very hard to play in co-op when using a lot of mods.
With a PvP arena mode from the beginning you could always play with (against) people with a vanilla version.
