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

[Slick]

When was the last time you used a Class? It's not about dumbing down the game or making it easier. They provide absolutely no depth to horizontal progress. Classes provide absolutely no additional complex mechanics to this game. It's just fluff. They mean nothing. They do nothing, other than provide a bit of lore. Cross Class skills can easily be eradicated and just given to Jobs instead and be Cross Job Skills instead.

In fact, Classes make it harder to design completely unique jobs. For each job, you'd have to also create a base class as you can't use already existing ones. They'd only change 5 skills, (7 in the expansion). But 7 additional, different skills, doesn't make classes or jobs unique at all.

I guess I just love the lore, and would hate to see that stripped from the game.