As someone still progressing through the story, I always assumed their rotations would "get better" (i.e. exist in the first place), or that encounters would start to demand much more healing. I love support roles in other games, but honest to god, finding out that they spent the last two expansions cutting Healer complexity so dramatically is the most upsetting thing I've experienced relative to this game. If I end up quitting, that will almost certainly be the primary reason.

Tanks and Healers both feel so homogenised, but on Healer it's so much more stark and depressing. The result is healer is only fun when there's a disaster going on -- if everyone in your party is excellent, playing Healer leaves you bored-to-tears.