Shadow Priests - now best healers in the game

•Vampiric Embrace: This ability is now provides a 30-minute buff that cannot be dispelled, instead of a target debuff.

So shadow priests are now the best aoe healers in the game ? spriests can spit out 7-8k dps this gives them over 1,000 heals per second on everyone in the raid times at all times . . . There is 25 people in the raid thats 25,000 HPS and thats just 1 spriest. It seems abit overpowered. So raids now just stack 5 shadow priests and 1 holy paladin that will be plently enough healing for everyone.