This is how they should do it. By why is it that almost every year the player who wins the heisman (which typically goes to the college player who puts up the best stats) ends up going high in the draft. In particular QBs who can go from not even being in the discussion of a 1st round pick to being in the top 5. Just last year nobody had Jayden Daniels as a first round pick before the season. He wins the heisman after putting up monster stats and goes #2 overall. In 2017 Baker Mayfield went from a guy who nobody had as a first rounder to the 1st overall pick after winning the heisman. Same with Joe Burrow.
The prospects like Trevor Lawrence that are gonna go #1 overall no matter what based on physical traits are rare. Usually it's a combination of physical traits and production that gets you drafted high. And the higher your production the more likely draft experts are to overlook your physical limitations. A great example of this is our very own Derek Barnett. I got into a lot of trouble before the 2017 draft saying he wasn't a 1st round caliber player based on his lack of elite physical traits. Nonetheless he still went in the 1st round because his production was elite. Unlike defensive end, QB production is dependent on other players. So if a QB prospect wants to improve his draft position by putting up monster stats then it makes sense to want other great players around you.