I personally would like to see some sort of traditional classes be implemented.

Hows this of an idea, at r50 you get a a few different paths to go down. Lets take Conjurer at r50. When I hit that I would like to be either a whm or a blm not both. When you take your path you get special bonuses to either healing or nuking. This can be implemented on all classes not just the mages.

Having us "graduate" to other classes seems vintage FF to me. I remember playing the older FFs and when I reached a certain lvl with my whm I became a wizard. Idk seems to me like something to work towards.