Perspective of a Newer Player

[AriaEnia]

I think MCH, AST and DRK are the "advanced classes".
These classes are for people who already have grasp game contents, mechanics, other classes, etc.
That's why they aren't be given straight away at the starting cities.
It's not that these new 3 classes aren't for new players but, I don't know, maybe because newer players still can't utilize them fully. Heck even for veteran players, some are having hard time with maximizing the classes' utility.

For newer player, I think the starting classes offered are the preparation for these classes.
So, i think for newer players, be patient and learn about the game's contents and mechanics first and also enjoy the story.
It's a progress.