There are three issues caused by classes that I can think of:
- you can enter level 30+ dungeon without your job
- palace of the dead is a good way to get a feeling for your job at lv60 without having to level it up, but you still have to level it to 30 first...
- having to start as a DPS to become Scholar
Should they resolve all those issues? Yes, sure.
Should they remove classes? I don't know how that really helps.
In fact, the only thing they really should do is separating Scholar from Arcanist completely.