Rehgar?
I missed that one in the list. How on EARTH is he being played badly? Take every chain heal talent and the shield at 7, and go mad spamming chain heal. It's ridiculous how strong it is currently - and also how brain dead a build it is.
Melee healer is tricky by default. You want to contribute with damage while keeping yourself and allies healthy. I think a lot of the potential of Rehgar is wasted if you play lili-mode with him. Feral lunge can be ridiculous sometimes and on some maps, versus some comps you want healing totem, slowing totem or farsight talents.