I like the basic premiss of this thread.

"Make a class a lot more different than its job counterpart" or "Widen the gap between classes and jobs".

I like it...

Classes with the same treatment as jobs (2 sub classes to use from that shouldn't necessarily be the same ones the job uses, 5 unique abilities, Artifact gear and weapons.)

Turn Classes into jobs?

There is no reason for a Gladiator and A Paladin to be almost identical anyway.