I don't see the value of people of repeating their forum posts for content creators/devolpers. That critique can be found here. It is here. Even streamers and influensers are disagreeing with each other and the problems raised here. Some value purely being able to heal. Some would like more damage buttons. Are you suggesting healers should divide into teams behind their champion of preferred style? That will help even less. One thing I've heard is that there isn't that much healing at any difficulty. That should tell the devs enough. This thread has many people tell why they don't play healer anymore. That should be enough. Not to mention the links to other theads for reference.
So far there a lot of those who have had a knee jerk reaction to this thread, trolls and those who don't really play healers.
It seems your advice is to be more loud through creators and be more precise with your critique. That is partialy happening already as they are already making vidos about this thread and the subject. So it sounds like you suggest not really doing anything.