I brought this idea up about a year ago and it was ignored, instead listening to reason.
I feel you went with the angry mob. Healers received tons of nerfs, and all sorts of changes, that didn’t really fix anything, it just made the class feel worse.
The “freedom to play what you want” was lost and with it, Pally was Killed. Yet “healer OP”, is still a real thing.
The solution is simple, have healers loose mana when they are hit.
If healers were loosing say 5 mana every time they were hit. They wouldn’t be able to just stand on a SG and out heal any damage they take. They wouldnt be able to just dodge around and totally ignore the dps chasing them while they heal other players.
This would not have much of an impact on the PVE aspect of the game, it would help the PVP side. Which is what the game really needs.