If it's going to be handicapped and crippled because of the games direction and the restrictions that the current armoury system puts on jobs... then I say they shouldn't bother.

TBH I don't see why they don't just make an "advance job" category like FFXI did. Have your base jobs that area easy to play, and then branch out to more complex jobs like what BLU, PUP, RDM could be. Then again... the DF would break unless they gave the option to queue as a certain role?