Im looking at it from a story and lore perspective here. I understand the system is useless once we reach level 30 no one is denying that fact. The issue is classes are well were what most adventures (not just us the WoL) are in the game. Jobs on the other hand are more rooted in secrecy or lost arts for some. How would all the pre 30 content change to fit this idea classes no longer are in game?

Remember in FFI when we upgraded to a more powerful class? We sort of have that now so I don't see the issue with the system. Could it be worked on and a bit more fleshed out I guess but to remove entirely, how would that solve anything?