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

[Ametrine]

I operated under the assumption that classes only apply to roles you can begin the game with, the moving to the new jobs became an option when you could swap after beating the level 10 quest.

I mean, crafting and gathering classes are already set up so that you walk in at level one and work straight to 50. If SE writes it that way, I can't see there being that much confusion.

[kyuven]

I mean, crafting and gathering classes are already set up so that you walk in at level one and work straight to 50. If SE writes it that way, I can't see there being that much confusion.

I've actually found several that imply a sizable gap in time between one quest and another.
Of course they also imply a time limit on some like the armorer quest.