Weapon restrictions with regard to certain classes/jobs.

[Jinko]

Unlikely, unless they remove the armory system completely.

Yoshi-p has said several time they are considering Two handed sword for GLA at some point although possibly removing dagger.

As others have said in different threads though there is a good chance we will see the addition of multiple jobs per class so a two handed/ greatsword job could work quite well for GLA.