Latest Official Developer Statements About Healer DPS?

[Absurdity]

SE tried to solve this in Abyssos. Their method of solving lack of healing required is to make raidwides that deal more than the max HP of the party so you just die unless you mitigate it, which(to no one's surprise) made double shield healer a much better option than 1 shield + 1 regen.

I don't think the fight designers truly understand how to make a proper healing-intensive fight, which is weird, because Barbariccia is a good fight design that fits the bill of "more healing requirement" rather than Rubicante/Golbez and their mechanics which can just kill you from full without mitigation.

But that brings us to the usual problem, even if they made proper healing-intensive fights they will still be 100% limited to just savage, ultimate and maybe the odd extreme. So in the majority of content, expert roulette, alliance raid, normal raid, treasure maps, etc you will still be bored to death.

Not to mention that if you take a good hard look at healer's healing kits they're not very interesting either, outside of very few exceptions like Haima, Liturgy and Macrocosmos. So you've replaced spamming Glare with spamming Medica, the most bland "make HP bar go up" spell ever, GG.