of draft picks over the last 10 years shouldn't concern them. If they have NFL talent, they can expect to get drafted even if they go to BYU.
But the fact that they won't be playing with much NFL talent around them maybe should concern them (if they care about that).
I agree that the fact that we can't think of many players who should have made it to the NFL but didn't under Bronco says a lot about the talent he has brought in. For the first several years of his tenure, his main goal was to recruit guys who wouldn't gang-rape anyone. He has been very successful with that goal. It seems that in more recent years he had been looking for more talent to go along with that.