Not sure if I can still post my own concept as a separate thread, but I will add to the discussion.

I also came up with a concept for the Red Mage job, which like with Eloah's concept uses Rapiers. Since only one class/jobs can use one weapon type, and sword is already used by Gladiator/Paladin.

Also thought of them using Enspells, with my concept both benefiting from just using an Enspell, as well as receiving combo/chain bonuses for rotating the Enspells. In a way, it might work similar to Ninja's Mudra abilities, if they applied other effects while active. So it might actually fit with the original poster AspectOfWinter's Far East origin concept.

As for the Red Mage's ability to use both white and black magic, my concept handled that via some unique abilities of the Red Mage's own, and having the highest cross-class ability for a Job with DoM classes/jobs. While Red Mage would primarily be either a Damage or Tank class, it could off-spec as healer thanks to White Mage abilities, or as ranged magical damage dealer from Black Mage.