1 Class 1 job:

1-You need to add a new class that nobody care about to add the job that people want.
Example: Something with a stupid name > unlocks Samurai. we just want the Samurai.

2-If the new class's job isn't implemented with it, it will be undesirable for groups until it gets a job.

1 Class and more than one job:
1-You can't add a job that changes how the original class function by much (DRK on GLA will have a bunch of shield and defensive skills they have no use for)

2-When you equip a crystal (GLA+Sword > DRK+Great Sword) what happens? do you still have your weapon on or does it get unequipped or what?

3- You start @ lv50 if you're already 50 in that class and you miss out on playing the new jobs.


You really can't win in either scenario.

Insta-Solution: Scrap classes, keep jobs and adjust subjobs.