Is It Even Possible To Have A New Healer Job?

[Kacho_Nacho]

so we have to turn the HoT healer into a burst / shield healer to make him work?

Not at all, Tint. You just give them the option to burst heal in exchange for their HoTs. After the burst, the HoT healer would have to reapply all her spells again.

A HoT healer is a popular play style in WoW. But, with White Mages having multiple HoT spells already, I don't feel that Square Enix will introduce another healer who depends on HoT spells to FFXIV.