Classes are going by the wayside. They have already said on many occasions, that they are re-doing the class/battle system come 3.0. starting with 2.4 onward they will be making subtle changes to prepare for it.
This is good, I have been waiting a long time for this to happen. Probably going to have to level sub class to 30 and with job unlocked, to unlock all new Jobs from 3.0 and going forward.