Yes, to an extent but I would roll with disc priest instead considering the rogue and hunter will probs roll a lot of pve items for extra AP and the shield bubble will be amazingly useful - and Druid heals are mainly hots which means they require time to take effect. Hunters are reknown for getting globalled
What cyber said is correct, all classes and most comps are viable, ones more than other, but it will always be like that.
Asking this kind of question on a forum won't really help you much, just grab the players, queue up and see it for yourself (if there is sinergy, there is results)