For as long as I can remember DH/Druid are the only viable RBG tanks…and now just druid really.
Blizzard, be mindful of this and give the other tanks some unique tools around base sitting/carrying the flag. Most tank pvp talents are useless and there is a lot of easy fixes here. It would be great to see a Brewmaster be just as oppressive as a guardian druid. Or if I see a Blood DK or Veng DH queue up I have a tough decision.
It would also make forming groups alot less painful…waiting like an hour for a guardian sometimes.
In all other content, blizzard actually did a good job of balancing tanks but in pvp it currently is, and always has been awful.