Do you follow recruiting at all? Do you really believe that Cox, Manning, and Isom were higher priorities out of HS than Hansen? The Qb's you listed aren't P5 level kids, and they will never lead Utah to success in the PAC.
Of course Langi isn't White, McCormick, Poole, or Booker. Langi is not a RB, and he wasn't recruited as one. Stanford, USC, Utah, BYU knew Langi's future was on D. Utah told him he could play O to get him there, then switched him to D after he failed at RB. I remember former players like Gunther and others talking about how Langi would return from his mission and play DE at UTah, and that he was without question a future NFL guy there based on his measurables. Whitt was pissed about losing Langi for a reason, and it wasn't because he provided depth on O.
You think Langi switched because he wanted to get on the field faster? How has that worked out for him? He can't even contribute right now to one of the worst ILB groups in recent memory. That is a bad argument.