Apparently blizzard has no issues with making certain mechanics or abilities work differently in when used in a pvp environment.

TFB now only stacks 1 time against players, for example.

How about blizzard give shamans back their totems while silenced, and make resto mastery a certain percentage less effective in pvp zones? Remove the painful nerf to the dps specs that were already struggling and fix what was the real problem in the first place.