James McKnight was the best athlete that I can remember and I'm talking prior to his serious knee injury that he sustained while playing at LU. I feel that he may have gotten the nod as the best ever had he not had injuries. He was a good character guy as well.
Guys like Gado and Green proved that they could hang in the NFL, but both saw limited action until their senior seasons.
LU had a few really decent QB's back in the NAIA days. From what I remember, most of them were undersized with the lone exception of Phil Basso who had good size for a QB. Basso had a big-time arm and put up some huge numbers. Basso had a big time college career and his talent level was good enough that he had a cup of coffee or two with the NFL's NY Jets.