The devs have already expressed said they view the class system as something of a failure, and have no intention of revisiting them. An overhaul of this magnitude wouldn't really have a benefit since you have to then ask, what makes a Gladiator or Marauder unique? Being a sellsword or pirate aren't standouts in the sense you can really devise a whole separate job/class around what wouldn't just clash with Paladin or Warrior. It's the same as when people ask for a pure-blooded Garlean race option. What makes them unique beyond being Hyurs with a crystal eye?