Ummm...not to see bitchy or anything, but if you allow forbidden warrior then you better beef up all the other classes. Otherwise it will seem to be a monopoly. I.e. Its a warrior that can wear heavy armor, has the ninja ability to dual weild weapons, and can cast medium level magic. Yeah, from what I see of the other classes...its heavily one sided.
Though I am sure I can come up with some abilities for Dragoon and such to easily make it equal.
Just some comments...