Jobs are the equivalent to a specializations.
There's only one one spec for each class right now because they have to release more jobs.
There could be some utility choices between specs to make each person feel unique, but I don't think it's the right choice.
Because of this basically.
Final Fantasy works with archetypes in all their games. From FF1, where you had your Thief, Warrior, White Mage etc, to the later games where characters still all fit into those roles with just different personalities.
You fulfill those roles in this game and having too much differences between each Job will dilute the concept of what it means to be, say, a paladin.
Find your niche and fill it. When you meet another Job of your type, you can feel a connection because you're the same.
Might be an eastern thing. Strong desires to express individualism on this scale is a western ideology.
Might just be a clash of cultures.
