I really don't get why we can't have more divergent classes into other jobs.

Marauder could branch into Berserker, dropping all his extra tanking abilities to allow for more DPS options.

Gladiator could branch into Myrmidon, dropping the shield along with shield abilites to pick up a second sword, to do dual wielding sword to turn into a DPS.

Pugilist could branch into Brawler, gain a stance that increases HP/Threat, and drop positionals on their abilities while dropping their damage.

The base abilities of these classes wouldn't change any, and you'd unlock their job abilities one by one, so wokring out how they play different should be that rough.

If they're not going to bother doing anything more with base classes/jobs, just drop the concept already. Jobs vs Classes are strange to new players, especially if they're ultimately pointless and no one has a good answer to anyone when they ask why it's set up that way.