Red Mage, again?

[ChazNatlo]

All future jobs aren't going to have a base class IIRC, just start off as a level 30+ job.

Probably.

Them doing it for Heavensward doesn't mean they will always do it, unless you've some source I missed or forgot about.

That said, if it isn't an "extra Job" It probably wouldn't be switching from DoW to DoM. They treat Jobs as the same thing as Classes for the purpose of categorizing them.