Old news.
This is not a PvP-based game. It never was, and it never will be. It can be done, and it can be fun, but balancing every bracket, every class, and every ability will never, ever happen. Honestly, to me, their best move right now would be to delete Arena as a whole, and put more emphasis on competitive BGs. If that means losing the '1337 pvp starz' playerbase, so be it.