I suck at PvP and only play on PvE servers...and my only Shaman is Resto spec'd.
So this won't realy affect me. I'm sure they will continue to nerf and buff things as they've done from day one, so the only thing to do is figure out a new strategy and move on.
We've got a lot of smart people here, so I'm sure it won't take you long to create a new "I win" button.