Healers need an overhaul

[Sebazy]

So they've delayed an AST overhaul until 7.0 because of "extensive changes" needing a new expansion and not just a patch or something.
Is there any chance that this could portend an eventual overhaul of the healing role?

I can't think of a single x.0 patch healer overhaul that has gone down well TBH.

3.0 AST was a disaster
4.0 SCH was a train wreck, AST was a nuisance
5.0's great healer reboot ended up being a gutting
6.0's was comparatively minor but it's neat additions were overshadowed by oversights and mistakes

Forgive me if I'm not terribly confident here =(