Now that the NBA has trying to expand the D-league so that every team has a franchise (and the Bucks look like they will be starting one), it is pretty clear that the NBA will have no incentive to change its current system. It will have a true "minor league" in place where players drafted on potential can be seasoned. The NBA product is pretty good right now anyway. I would argue a lot better than it was 10-15 years ago.