Both healers dont need protect both healers dont need esuna. In dungeons often you dont need esuna. Also in dungeon you can make it out just fine without largesse!
People always assume two healers. With one healer, Whm's are back to their core abilities they lost.

And besides that, who wants to be switching in and out skills? I don't. Muscle memory. Switching in and out skills... pft... There goes hitting everything wrong.