I have posted in other forums about this idea...graduating when you reach a certain rank.

I am a conjurer, when I reach rank 50 I would like to have the option of either being a whm or blm. When I choose either of those I would get bonuses to my healing or nuking.

I would like the graduating system implemented it would seem vintage to me. I remember when I had a whm and achieved a certain lvl I would become a wizard.