It would keep those people you mentioned from thinking you can get right seat of a jet by just loading up on debt. Maybe some will find the thought of flying boxes or students too high and will go elsewhere with their student loans. However I think the industry has cured the next generation of shiny jet syndrome quite nicely after 3407. Just go look at any flight school and you'll see they do not have the stary eyed students they once did.

Someday there will be a need for pilots once again, however this time we won't be able to fill the seats by sending thousands of kids to school for 6 months and happy with living like college students at the airlines. They'll need to pay for those of us who are professional enough to spend the time to get our ATP.