I just think it's not needed. I think healer design is fine and even if it could be better (such as less dps focus) id rather them spend time on other things. Healer is the role that has the biggest dependence on encounters. Healers are like plaster and encounters are like a rough wall that you try to smooth out. The best way to make it more fun is to just have more and interesting battle content, to have more interesting nooks and crannies to fill in