I feel that, as far as the DPS role is concerned, what makes any given job within it interesting is the HOW they arrive at the damage number. I feel like with healers, there's an added layer, where what is interesting has to come from both the HOW damage is healed, and WHAT TYPE of damage you're dealing with. Only way for the devs to make healing truly interesting, from my perspective at least, would require and upending/overhaul of how damage is dealt/received in this game... And I think that's most likely why they'll never do it. It is a fundamental change which would require a ridiculous amount of content retuning and outright restructuring in a good number of cases.

I think it's pretty sad that a lot of the arguments made towards "fixing" healers have to do with adding damage options. It really drives the point that roles in this game are, at their root "DPS + [something else]." At the same time, I can't outright dismiss said arguments because with the way things currently work, they're entirely logical considerations to make. It's in the line of thought that goes "healing is boring, so GIVE THEM MORE STUFF TO DO" and that [STUFF] could just well be more buttons with which to deal damage.