A summary of healer issues

[Aravell]

So I guess you'd have NIN DRG BRD DNC RDM SMN moved to this new 'support' role, and the others double down on being more selfish.

I don't think turning NIN back into a support would go down well with the current NIN players, most of them seemed to be thrilled when the Trick Attack changes occurred since they want to do more personal damage. NIN has also been stripped of a majority of their support abilities, in fact, MNK has 1 more than NIN atm. NIN's Mug against MNK's Brotherhood + Mantra.

MCH when introduced had some support abilities with the Turrets (for the life of me I can't remember it now, but I remember it being a thing then)

MCH had Hypercharge, which made the Rook turret give phys vuln and the Bishop turret give an AoE magic vuln. They also had Promotion, which stopped all turret autoattacks to pulse a restoration wave for TP (Rook) or MP (Bishop).