If I was an NFL GM, I'd pay lots of money for real, midseason 40 times for these guys.
These times are a bit silly, as these players have been doing nothing but training for this since the end of the season. It would be useful for a potential track career, not football.
I worked with the girlfriend of an eventual 4th round RB and he'd swing by every day after training. He knew exactly how many strides his 40 should have, working on his start a lot, etc. That's not football, lol.
It's like studying for the SATs. What are we doing here?