I feel like this is one of those instances where I need to highlight my previous thoughts [1, 2]:
There are times when I feel like SGE is what you get when what you wanted is a WHM that hasn't been constrained by being the purest of "pure" healers, but instead you need to shoehorn the job into being a "barrier" healer.
EDIT: In terms of gameplay, I mean. The aesthetics are obviously worlds apart.
Like, WHM doesn't need to be Meta(tm) or The Best(tm). It just needs something more to its healing kit other than, "lol, I'll fix HP bars... assuming we're not all dead when {the mechanic} resolves."Let me elaborate: In the context of FFXIV's current encounter design...
No one has ever accused WHM of being the bestest of "pure" healers, nor has anyone accused of SGE of being the bestest "barrier" healer. On the other hand, people have accused WHM of lacking in barriers, and SGE of putting out too much regens/HP.
Take SGE, delete Kardia, rename (Pan)Haima as Regenerative Stoneskin/Protect (or whatever, I'm bad at names), smoosh what's left into current WHM, and... I think that might make for a reasonable jack-of-all-trades-master-of-none healer.
And that, I think, is perfectly fitting for a healer that you can pick up at Lv.1 and take through the MSQ and Be Viable in Content(tm), while being in keeping with previous Final Fantasy games where the only healer was... a white mage (or close derivative).