I don't get the love for Grantham. Just because he runs a 3-4 and Georgia (which by virtue of being UGA has favorable recruitment in the SEC) has had success against lesser teams, doesn't mean he's going to come here and turn the Saints D into the Dome Patrol 2.0. Then you have a distinct lack of in-game adjustments, and rumblings about character from NFL players from his time in Cleveland.

Spagnuolo's demise came about because he refused to adjust his game plan to the personnel at hand, a complete lack of in-game adjustments, and there were rumblings players didn't like him (regardless of Vilma's attempts to keep matters in house). Are you sure you want more of the same?

Ryan, on the other hand, may be a character, but by all accounts, his players like him, and while none of the defenses he's fielded have been what you'd call great, he at least has been able to field mid-tier defenses, even while working in dysfunctional franchises like Oakland, Cleveland, and Dallas, and going through rashes of injuries, like the Cowboys last year, who lost 5-6 starters, and still finished in the second tier (10-20 rank) in defense.