One glaring inefficiency in the NFL talent evaluation process is the same thing specified in "Moneyball" - NFL GMs want guys who look good in jeans. They want the 6'4" guy over the 6'1" guy every time. They want the 4.4 guy over the 4.6 guy EVERY time.
I bet I could draft a team of free-agents that were unsexy and beat an NFL GM's talented, potential-laden team he takes from free agency.
Jerry Rice ran a 4.71. 3rd WR taken behind Eddie Brown.
Emmitt Smith ran a 4.6. 2nd RB taken behind Blair Thomas (4.4).
These are obviously special cases, but there's so much more to being a great WR than how fast you run 40 yards. We say we all know that, GMs say they know that, and yet when a guy runs an especially fast 40, to this day, he "moves up the big board" and gets on some team's radar, suddenly.
At least speed is a functional skill. Size isn't, necessarily. The case of Aaron Donald is interesting. Everyone was down on him because he was short. Ignore his utter dominance at Pitt. People were crapping on him left and right...and then he ran the fastest 40 for a DT ever. Ohhh, now he's sexy again!
It's nearly just nonsense, the whole thing. To miss so often, to be wrong with such enthusiasm, the draft and its coverage and what GMs value seems little more like mental masturbation.