Not to change this thread into a redshirting debate, but Deandre Hunter only played two seasons at Virginia. That didn't pay off for Virginia at all - unless you think for some strange reason that Hunter would have been harmed playing his freshman year, then Virginia only got two years out of a great player instead of three.
Redshirting pays off only if the player stays five years AND he has enough talent that the team wouldn't want to trade him in for his scholarship. For example, it would have been awful to redshirt Hurt or Konate or Diedhiou (the list could go on and on) and use up a fifth year of scholarship.
The list of successful redshirts is small and growing smaller, and ignores the many, many, many, many instances where players redshirted and then transferred or went pro early or simply weren't good enough to justify the extra year. Modern college basketball, and the relentless inter-team movement of players, suggests that redshirting is just a very poor bet.
Remember when we had people arguing that it would be a great idea to redshirt David Mutaf?