Quote Originally Posted by Xikeroth View Post
I don't think it would be strange at all. Classes are in Eorzea's lore the jobs are a further extension of those classes with more defined roles. We have Gladiators then we have Paladins. Both have their own lore and background. Dark Knight is likely just that. It enables them to establish the DRK lore longer and in much more detail than if they give the first like 7 quests to a class and the remaining to DRK.
Yep we have to keep in mind that Lore wise the Jobs are special because only few people are able to actually learn and master the Jobs.

Dark Knight most likely will have a Lore reason why it is a Job without a class while keeping the concept that Jobs can only be learned by very few people worthy of the Soulstones.