Blizzard have already designed healers to be more powerful than dps because of the 2 for 1 (healing against spelldamage) (not talking about 1v1 here) I guess this one done to encourage people to pick healers for their chars and to stop everyone being dps. As every season starts, it brings everyone more and more resilience till they hit the cap. Being a mage myself, my increase in resilience is being countered by the increase in resilience in the person I am attacking, however healers gain more and more advantage the more resilience everyone has as it becomes easier and easier to heal themselves and others.
Because of this, for example in 2v2 at the top end , it is all healer/dps combos (yes I know some mage/rogues run high but they arnt so many), blizzard are trying to balance classes in 2v2 but arnt even thinking of balancing healer vs dps which they should.
Healers are now so powerful, I can now be beat by certain spec healers 1v1 :S and im a 1900 rated frost mage (2v2) so i know what im doing, personally I think the game needs a slight redesign. Is it right a blue/green level 70 healer can heal someone else for more than I can dps them down being full epic?
My thoughts are cut healing bonuses by one third. If u think that is too much, maybe cut heal bonuses by 1 third and get rid of 50% healing debuffs. (of course this could only be implemented in the expansion as lvl 70 things couldnt be redesigned).
(Why do I only pvp in a pve designed game :S)