Healing Spells You Do Not Mind Being Removed in PvE

[Renathras]

Correct me if I'm wrong, but wasn't this something that FFXI Scholar would do with Light Arts and Dark Arts? It would make sense to tie it into what fairy we could have available, a healing stance that gives us our shields and would summon Eos, and a DPS stance that summons Selene and gives us our stronger DoTs, so long as we don't need to be in one stance at all times to play optimally it could be pretty fun.

I get now their goal was to move away from AST stances, but I felt in ShB that they should have made Eos/Selene like stances for SCH. I was thinking pure/barrier (e.g. one perma-activates Emergency Tactics for Succor and Adlo making them strong Medica/Cure2 versions, and the other would make them shield like normal and maybe make Indom and Lustrate apply shields as well), if not make Emergency Tactics itself said stance. But they went the other way and just dropped AST stances in EW anyway.

Reading about FFXI SCH, it seems an interesting mix. Kinda funny that ARR WHM was the one with Cleric (from CNJ) as opposed to SCH (from ACN), but either way...

[Archwizard]

I get now their goal was to move away from AST stances

But they went the other way and just dropped AST stances in EW anyway.

I wouldn't say AST stances were true "stances" however; they were only positioned there to make AST "flexible" so that you didn't double-up on shield or regen specialists.
You couldn't switch Sects while in combat, so they forced you to commit to one or the other based on your party composition making the other one just eat a slot for the entire instance... and because Regens stack while Nocturnal Sect debuffed your MP economy and didn't restore as much health (nor did it come with an Emergency Tactics equivalent to turn the barriers into burst healing, or most of Scholar's superior barrier tools for that matter), you were better off using Diurnal Sect anyway regardless of your co-healer, besides a few niche instances or encounters.
It basically made Nocturnal Sect a dead button and the Sect divisions pointless, contributing to its removal. That, and the introduction of a dedicated barrier healer outmoding it while allowing the devs to fix Savage parties to one of each division of healer without worrying about ASTs trying to game the system.

When I say "stances", I mean more like what Tanks have: toggle an effect within the encounter as you tag-in or -out of a given position, based on your needs right now.

Which is why I used Deployment Tactics as an example: toggle between your single-target and AoE skills, both offensive and defensive. During most dungeon pulls, you'll want Adloquium (stance off) and Art of War (stance on); within most boss fights, you'll prefer Succor (stance on) and Ruin II (stance off) instead, meaning there would be ample reason to toggle frequently to suit your needs during each encounter.
... Plus you could also argue for AoE equivalents of Physick (meaning no need for Emergency Tactics if they just buff Physick) or possibly even Bio (Miasma, anyone?) without increasing the button count.