b.)--> toning down other roles self sustain slightly, so that they are more reliant on healers actually doing their job. I am no stupid enough to ask for their self sustain to be removed entirely. this is pointless, stupid and forces players to play in specific manners which the devs DO NOT WANT to do. What it COULD do, is lower the potency of these self sustains, to the point that, in parties, it creates more reliability on healers to do their job rather than restore half to the entirety of their health bars and leaving the healer effectively cucked.
c.)--> **Most Important** establishing a far more indepth form of tutorial or Hall of the Novice; while also bringing it to the forefront of the game when a player first starts, so that they are effectively teaching newer generations of healers what they are actually supposed to be doing when they are in DF or random groups (basically anywhere outside of friend group). (Seperate note -> The Hall of Novice needs a revamp anyway, this is a good excuse for devs to do so)
d.)--> Taking a more indepth stance with the healer jobs, they COULD infact, revert to the old healer class actions & abilities. Bringing back cleric stance & giving Astro their original cards back would be a damn good start. Neither of these would interfere with current specs nor would it become intrusive to other party mechanics. It would actually distinguish again, who is doing their intended job and who isn't. Which is what should be the case to begin with.
---
There is obviously still the issue of those already in the healer ranks who still don't know their job (or refuse to applicably be a real healer), and to them i would have to honestly say, relearn the role. Go through healer again with the changes we are arguing for and actually spend the time healing instead of prioritizing damage. *(this is a copium request but still one that needs to be said)*