Honestly would like to see Chemist synched up to the alchemist craft job somehow. Would be a interesting twist on the job and could make items more practical with Chemist enhancing the buffs. Green mage I would love to see a magitek take on it, like it could be the garlean's way of artificially producing magic to attack. Both of these jobs I could potentially see as prime candidates if we ever go to Garlemald, and maybe we'll get some garlean rebels whom are against the current situation to teach it to us.

Elementalist, like I've heard some people argue before, is too similar to conjurer's elemental attacks already, so I don't really see it making it.

Necromancer I always wanted to see especially as a reverse healer job, ever since Edda basically became it. Though it's another one of those forbidden jobs... so idk how they'll implement it, other then maybe we eventually travel to the Thirteenth and get taught by the fiends there. That would be interesting.