Problem:
Yoshi-P stated they are considering to change the current class names into original final fantasy job names.
Issue:
Naming a gladiator into a paladin does not make it one. No current class really fits the profile of the canonical jobs.
Proposed solution:
Turn the classic jobs into advanced jobs with special requirements to be unlocked by making use of the Final Fantasy Tactics system.
Example:
While a GLD isn't a PLD, a GLA with CON gets pretty close. So lets say you unlock PALADIN when getting gladiator to 30 and conjurer to 20. Then you'd be able to level up paladin.
Marauder and thaumaturge give dark knight. Both conjurer and thaumaturge together could unlock both black and white mage and so on. I'm not going to impose my views on the requirements, that is for the development team to do.
Result:
Highly specialized jobs. Currently there isn't much difference between one and another. But picture you wanted to focus just on healing. A white mage would get buffs, healing spells and traits specifically suited for a healer. Also class specific gear would be a good idea which would enhance the job's role further (in this case whm only gear would help healing power or buff duration).
This would not only implement the classic jobs we all love, but it'd also give us players an objective to play for.