The thing is, pure support wouldn't really work in this game due to a big focus on a DPS meta, and I am of the firm belief that RDM will bring a heavy support toolkit much like BRD and MCH.

I do also agree with Yoshi Ps stance, and what they did with the job:

Yoshi: So for the Red Mage, and when we were talking about how will we make Red Mage fit into the realm of [FFXIV], there was actually a very heated debate about what role it should be.

Of course, there’s the element of using the rapier to do close range attacks, there’s also the element of magic, and that’s more of a ranged thing. There were discussion about do we have to start considering hybrid jobs, or do we just go the other way and make it a healer. Yoshida-san felt that no matter which route they took, it might differ from what players imagined a Red Mage would be.

http://twinfinite.net/2017/03/ffxiv-...view-pax-east/