This whole dicussion is going in circles right now, because there are different viewpoints and opinions on the whole role distribution and honestly that is fine.

But I do think there is one thing we all can agree on:
The way they handled the whole thing was (to word it nicely) suboptimal to say the least...

I really think, if they just gave us healers some kind of recognition or explained some of their plans for the healing jobs at fan fest a lot of the backlash would have been avoided. They did give us the reason for no tank/heal in 4.0 and that was fine for most of us. They did not deliver on it and to give the exact same reason now is just disappointing.
All we got was some vague stuff from interviews, with one of this being "we want to make WHM easier". That does NOT exacly give the healing community any hope for them understanding the problem with healers at all.

Right now we can only speculate what will happen with healers in 5.0. It could be an amazing rework - it could also be 4.0 all over again (this is what I fear most). We have no way of knowing and obviously many healers (me included) don't have much hope for real changes.This could have been avoided by them just giving at least some info on their plans.