What are alternative healing options you want to see on a new healer class?

[Shurrikhan]

Damage to heal is a terrible idea, that makes healer essentially pointless. And Kardia is just a phat regen promoting you to spam one skill while the other 3 don’t have to

None of this makes sense.

Kardia is literally just a set heal tick value, effectively per GCD, which then punishes you further for using any healing GCDs. It leads to, apart from the sole exception of Eukrasian Diagnosis, an even higher cost to using healing GCDs than any of the other three healers.

And, yes, locking healing behind damage (or otherwise making direct healing even less worthwhile) rarely produces good results, design wise. Since it's already a part of Sage, though, it might as well be expanded upon on that particular job, ideally by having Kardia instead scale with damage (or offensive potency) dealt and opening up its dps kit such that Kardia then becomes capable of banking and burst(ier) healing.