I honestly think the damage of many specs needs to be tuned down by at least 50%. I'm not even kidding.
There are too many broken specs to count, but I'm looking especially at classes with way too many CC and survival tools like Rogues and Paladins. Nobody should be able to have this much utilty AND so much burst damage. The amount of CC rogues have would completely justify gutting their damage by over 50%. They are able to stunlock you, but there's absolutely no drawback at all. Same with Paladins - how can it be that someone can just be immune to everything while bursting you down in seconds? And even if you get to damage them they'll just heal back to 100% with the press of a button.
Every single class that has this much utilty should NOT be able to do so much damage. Either have utilty or damage, not both. It's absolutely ridiculous how unbalanced PvP is right now, and I'm pretty sure that even after a 50% damage nerf there would STILL be too much burst.