I made this up after another run through main scenario roulette. Main scenario roulette where.... everyone is that has completed story mode is ITEM level capped to 49. New players capped at 55 or something. Increased tome reward for for the newly gimped vets.
I think that would have made my main scenario experience more exciting and challenging if I weren't carried and speed runned through those dungeons on my FIRST TIME by obvious Item level 70+ veterans that are there for a few quick tomes. It felt like I was 4 years old and my dad pretended to let me steer the car.
As a crafter, I suspect a lot of people skip buying gear in the high forties and wait for 50, so maybe this would increase sales of pre 50 equips as well.