Magic as a Main Theme in an Expansion?

[Darkstride]

I should have been more specific; how many of those characters can you say fall into any of the magic jobs we have available to us? (Black Mage, White Mage, Summoner, Scholar, Astrologian)

None of them. It would benefit class identity if we had characters in the story that represented these jobs in the same vein as a Yugiri, Estinien, Thancred, and now the new characters being added in Stormblood.

Alphinaud is pretty clearly an Arcanist and is a main character throughout both ARR and Heavensward.

Also, with the way some lore works in this game, not everyone is running around as a "job". The Warrior of Light is a unique individual, and all of the other people you group with are merely adventurers. For instance, the Warrior of Light is able to become a White Mage, but there aren't hundreds of White Mages roaming Eorzea. It is a job that is very limited. The lore is actually sort of pesky given that all of the "adventurers" you team up with can have White Mage abilities. I imagine it's difficult to truly RP as a White Mage. As far as the main story goes, though, the Warrior of Light (you) is really the only person adventuring (potentially) as a White Mage.