Quote Originally Posted by Duelle View Post
There's two ways of doing this.

1) Set a strict Class => Job progression: This would require level capping Classes to lv30. Meaning you cannot level a class past the lv30 cap, and can only continue leveling to 50 by unlocking the job. Once you unlock the job, that class ceases to exist and instead becomes the job (example: If you level Pugilist to 30 and do the quest to unlock Monk, swapping weapons will not make you a Pugilist, but a Monk instead; the job stones would be moved from the Armoury tabs to the Key Items tab, and would no longer need to be equipped).
With the upcoming removal of requiring a second class at 15 to unlock jobs, they are arguably well on their way to this kind of solution.