I could be wrong, but I feel like if they were to adjust the cap to be per job, people would be running more dungeons/roulettes as they now actually have an incentive to. I can only speak for myself, but currently I only run 1 expert daily. That is it. No real reason to do more since it only takes 5 experts a week to cap Creation. If I had more jobs I could be working on, I would definitely try and sneak in an extra dungeon or two on the nights that I'm free. I can't imagine I'd be the only one doing some extra runs.