Glare & Dia function as WHM's damage. What I want is for those buttons to have more flavor to them rather than mashing the same thing forever. GCD healing will always be a DPS loss because you aren't dealing damage. Glare being 1 button only or being split into 4 different buttons will never change that predicament healers have to deal with. Lilies as they are now are DPS neutral GCD heals (and actually plus if it's half-charged before burst), isn't that great for a GCD-based healer? I don't see how changing Glare affects that at all. I'm not asking for more damage, I'm asking for unique ways to output that damage.
I agree with your arguments in the hyperlinks. Healing just isn't very engaging or rewarding this expansion. Bosses fart a raidwide once every minute and then it's back to Glare spam. And the solution to that isn't easy to think about because only changing future fights to be more heal-dependent neglects old content and it'll be a snoozefest to revisit them. What I and other people propose is to add more engaging gameplay for healers. When there's no one to heal or raise in a fight, give them something else to look at. SCH's old DoT rotation was a good example of how a healer can contribute to damage. They're just buttons you press when the boss isn't being hurt by it anymore. It's minimal pressure on the SCH to both deal damage and heal the party. Why do we want this out of the game?