He'd bring a lot to the party. Saban's defensive acumen is widely appreciated, but many underestimate his offensive expertise. Saban and Bellichick share the same "multiple" offensive philosophy (Erhardt-Perkins + spread hybrid), game planning use of various subsets vs various defenses, adjusting during game(s) as needed. The Patriots even have true DTQB zone-read options in their portfolio with Brissett as QB -- offense is adaptable to PS & DT QB. Daboll has coached QBs before. So has Locksley. I assume Daboll will also be the on-field QB coach for now, hopefully assisted by Werner & Trickett as analysts/consultants until Werner can be promoted to 10th on-field QB Coach.