WHM just needs a tune up for Lillies and Plenary Indulgence, bc both of those things offer a marginal benefit for the job. You can clear any fight purposefully ignoring them and it changes absolutely nothing about your performance save for maybe the use of Divine Benison for busters. As it stands right now tho, WHM is objectively better than SCH in almost every regard save for the ever elusive party utility. But even then, the removal of Cleric Stance hit SCH very hard. WHM can effortlessly make up for SCH's passive and free healing with their incredibly strong DPS and HPS, not to mention the much better MP sustainability.

I used to be of the idea that SCH was still going to be better bc NoctAST doesn't have any passive healing, and while that is still true, it's much more viable to bring WHM to anything now than it was at any point of Creator, so I stand corrected on that front. ASt+SCH is probably still the most optimal composition with DPS in consideration, but WHM+NoctAST is almost on par with it.

Of course, this doesn't mean the current state of healer meta is healthy. Astrologian seriously needs a massive nerf to their utility because they're literally the only job in the game that is absolutely NEEDED for any party composition, hardcore or casual. They're basically what WAR was through the entirety of HW and that's a terrible, terrible situation.