The problem is, that is probably not possible due to the requirement for the game's client to recognize legacy data from 1.0 (specifically, 1.0 characters who have not yet been transferred into ARR). 1.0 character data will therefore still list a class as a class by default, and because there is still plenty of 1.0 players who have not returned (and especially plenty who left 1.0 before the Job system was even implemented or as low level without unlocking Jobs), and because SE will not abandon the ability to allow 1.0 players to transfer their character data into ARR, hence that legacy of the original game will always remain I'm afraid.

Yes the Armoury System is moving to classless Jobs, but the original classes will always remain classes with a Job crystal attached, that will be something that they will not be able to move on from I'm sorry to say.