To clarify my position, I'm not arguing that Crawford or Moore would have been drafted after another year at Wake. I don't think they would have been. RC asked for examples of players that improved their stock after returning for their junior and/or senior year, and there are plenty.
CMM is a good comparison for Crawford. CMM could have gone pro after his junior year, but he would not have been drafted. He returned for his senior season, gave himself another year to try to improve his draft stock (it didn't happen), but he got the all-important degree. This is key, because a lot of basketball players end up either coaching and/or teaching when their playing days are done. CMM won't have to spend a year or two finishing his degree and can go right into coaching, if he wants, and he'll continue making money, instead of spending it.