The latest Dev Watercooler discussion: http://us.battle.net/wow/en/blog/13183878/dev-watercooler-building-healthy-gameplay-3-7-2014
In particular, a quote from the discussion under it: "@Nethaera: It feels like every time the decision to make WoW more challenging happens it's healers who are punished."
Shamans so OP they ain't even gettin' the instant-cast heal nerfs. xD ZAKA SO OP BLIZZ KNOWS THEY CAN'T TOUCH THIS.