I agree that FATEs are boring and create don't help people learn their jobs. I don't see why you think dungeons aren't viable though. Just because you xp faster running fates doesn't mean you can't get a group of 4 and grind dungeons.

I mostly level up running dungeons. I craft/mine while waiting in the Duty Finder... unless I role GLD. Just last night I was in a pickup group that ran a few dungeons back to back. It's just how i decided to play the game. I'm glad there are options on how you can level up.