Chance for Adv. Crafting Classes?

[tymora]

Just wondering...yes I know crafting is going to be dumbed down further, but I think adv. crafting classes doesn't really add to the complexity.

A form of specialization perhaps? Doesn't have to be a full 50 levels of leveling. Maybe 10?
Think of it like a Master's Degree - Can only choose 1 or 2?

I think this would be more interesting than a plain "you can only reach lvl 100 on 2 crafts" type of specialization.

E.g.
Engineer (ARM+ALC, build siege engines, airships if they let us build our own)
Gunsmith (BSM+ALC, Gunblades...for Musketeer if ever added)
Shipwright (CRP+WVR, if they ever let us sail the seas)
Builders (CRP+MIN, build houses)
Tamer (BTN+LTW, raise animals & chocobos)
Horticulturist (BTN+ALC, raise plants and trees)