I like Quinn as DC, time will tell with the overall defense which should only get better as the season goes on as the young pups develop.
His teaching and hands on approach with the ability to connect with his players has and will make a difference.
Simplification of the scheme and allowing players to play fast and instinctively should pay dividends for these players and the defense.
Only time will tell but I think he will get more out of the talent and will develop the youngins properly.