Manny will be remembered in two different phases. One of the defensive coordinator and one of the head coach.
As a defensive coordinator there will be some good things he's remembered for. Turn over chain, extremely disruptive defenses with tons of sacks.
As a head coach, he'll be remembered for mostly bad things. Losing the FIU and LA Tech, giving up record yards on the ground against UNC, losing after the bye week almost every time, 4th and 14, 4th and 17th, terrible linebacker play, and refusing to play the young guys early enough.