There are a lot of marginal and borderline candidates this year. Take the coaching candidates: Don Coryell, Tony Dungy, Jimmy Johnson. Now, JJ might seem like a no brainer but he only coached for 9 seasons. Yes he won 2 Super Bowls and built the Cowboys up literally from scratch( from 1-15 to a championship in 4 seasons is impressive to say the least) but although he had marginal success in Miami, he never took them to the playoffs so he's a bubble coach too but he'll get in no problem. Don Coryell, as much as it pains me to say it, no he doesn't get in. Tony Dungy, 13 years as a head coach, 1 losing season, Super Bowl winner(actually twice because that was his team in Tampa). He gets in.