3. Don't draft any players who haven't played at least 2 years of college ball.
I think that's big. Back in the day, the Bills would often draft small-school players who would be successful in the NFL, and the indicator of future success was 3 or 4 years of solid performance in college. I don't know why the Bills seem to get blinded by these guys who have one solid season, and next thing you know, they are being declared a future hall-of-famer without having played a down in the NFL. Give me a guy who has been solid all the way through college any day...