Would be dope if it were an advanced class. So you would need to level whm, blm, and arcanist to unlock it. Then in job form (which I would assume could be switched too from any of those three job) you would have sweet new scholar spells and skills, and the ability to pick extra skills from a pool of the three jobs or classes you needed to level to unlock it. This in turn would begin adding depth to the armory system we haven't seen yet.

Please refrain from telling me how far out on the limb I am, I am well aware :P

As a side note, w/e happens, if they release any class after arcanist that isn't musketeer, as a native of Limsa, I will be pretty butthurt.