Jobs should not have their own EXP bar. Why? Because you're already required to level up multiple classes to be functional in any good group/party/raid/dungeon scenario. I don't want to spend my entire life on XIV, pointlessly grinding hours of monotony into my brain via guildleves or simple grinding.

One of XI's major problems was leveling up everything. First you got to 18 on a class you didn't want to play, then you got to 30 on another class you didn't want to play. Then you unlocked the job you finally wanted to play, but since you don't have a subjob to support that you have to go back and level up another subjob (probably Ninja, which is itself another topic...), and by the time you get back to level 30 you've already done the same content over and over and over and over and over.

Repetitious and monotonous grinds have no place in XIV. Stop trying to make this game XI-2.

Keep jobs the way they are currently planned, tied to the class exp.