Every problem with the current iteration of healers.

[Semirhage]

-snip-

Large amounts of healing downtime are an emergent property of the combination of FF14's combat system, encounter design, and stated job balancing goals. Much of the dissatisfaction with healers as they are now can be boiled down to Square using positions like yours as a design template. It's a view on how healers "ought" to be played that clashes with how the above three factors make healing actually work.