I've been playing arena off and on for a long time. 2.2k in pandaria and draenor, 2.1k in legion. Still wouldn't come back for it cause even though its fun as fuck, World PvP was by far the reason I got into the game and the fact that its not existent anymore is one of the reasons I left. Also, you pretty much HAVE to grind PvE to play wpvp, before you could do pvp and you would be fine. Not so much anymore.