Healers are a mess right now. AST is OP, SCH is d-e-d, WHM is... WHM. But I'm not here to talk about why AST is amazing, or the multitude of problems with Plenary Indulgence, I want to talk about healer's role actions.
For me, I think Lucid Dreaming, Swiftcast, and Largesse are necessary. Then you have Eye for an Eye, Esuna, Protect, and Rescue all fighting for the last 2 spots.
I personally think that Esuna should be removed from role actions and given to all healers. It's too situational to always have, but it's so nice to have when those situations arise. Furthermore, Protect should receive the same treatment. There's no reason to not have extra mitigation. And I also hate having to activate it at the start of a dungeon, casting it, then getting rid of it. Then someone dies and I have to activate it again and cast it on them again.
At least, I hope that happens in 4.05, along with a lot of other changes.