i much rather outright say waht i find fun and what i find boring and let them decide what to do with that. i like ast because its busy, i dislike that it is shallow. i miss the time magic, i miss scholars dps spells, i think fey blessing is pointless bloat, i think the fey gauge is extremely underutilized, i think kardia and eukrasia are a bunch of wasted potential, etc. i dont need to redesign the jobs to identify their shortcomings. when i give feedback i dont just say "im bored" because like you said its not conductive to anything. im saying "im bored of pressing malefic 150 times in a single fight. im bored that almost none of my skills have any interaction or synergy. im bored because my cards have been reduced to shallow busywork every 2 minutes. im bored because theres barely anything to heal even in ultimate". in fact the LL question itself didnt just say "healers are boring lol", it tried saying why they felt it was boring (in that specific case they said there was barely any damage to heal so we just spammed our one dps spell for 90% of the fight, and it used the healerless clears as evidence of there being barely any damage).
now im not telling you or anyone not to give suggestions or solutions, do as you please. i just dont think we as customers have the duty to tell the devs how to fix the problems we identify.
you are conflating difficulty with fun. i used to have a blast spreading dots with bane in some ARR dungeon and managing my fairy so i never needed to leave cleric stance in the whole dungeon. im nearly falling asleep on the first half of p3s because theres almost nothing to heal between mechanics, and all i do when not healing is spamming X on my controller. what is harder, brayflox longstop or asphodelos savage?
healers need to be designed so that they are fun when not healing too. the game expects you to farm, the game has solo duties, the game actively rewards doing less healing, and people get better with experience. the class design needs to match the gameplay loop and stop pretending its something else.
when are we talking about? because in stormblood the main complaint wasnt that ast and sch needed to do more damage. they were already doing more damage. the complaint was that they were so good that they were overcentralizing, and meanwhile WHM was completely awful and had nothing going for it.
in HW the main complaints were that cleric stance made dpsing scary or whatever and that "my cohealer is chadding me !!!!!!"
it was only after shadowbringers busted sch and asts kneecaps that the complaints about damage performance started happening.
i personally would not be complaining unless whm was somehow top dog while pressing 1 key and astro had 40apm only for it to be always worse. but thats a balance problem, not a gameplay one. numbers can be easily tweaked.
either way i dont think whm being simple means it needs to be simplistic. PLD's rotation is simple, and yet you have probably heard the jokes about PLD being an microsoft excel main. black mage is a simple job with the highest skill ceiling in the game.
a job can be simple without it being shallow, and things can be easy without being boring.