Why did SE decide to make the three new classes not require base classes?

[Viridiana]

Classes don't serve any purpose other than lore, and this is why I don't see the current 9 classes being removed from the game. Just think about the White Mage questline for exemple, the adventurer is THE ONLY non-padjal allowed to learn the ways of white magic and was only chosen for that becuase of his great skill as a conjurer.

Honestly, though, they could probably accomplish the same thing while merging WHM and CNJ. Start the game as a CNJ, progress to 30, have a quest that requires 30 CNJ 15 THM, completion of the quest changes you to WHM. Instead of having equipable soulstones, just have it be like any other storyline item that we carry in our not-part-of-the-inventory bag.

Though, it would do weird things to cross-class skills, now that I think of it.