They could make positive change to offense by hiring a good QB coach. Brandon/Hoke should take serious look into offering Mike Sanford (age 25). He is the QB/WR coach and recruiting coordinator for Stanford.
Make sure he knows that HC/OC offensive philosophy wishes to emulate what he is currently running. Offer appropriate pay increase, offer Asst. OC title to coach QB/TE's and let him know that unlike current Stanford OC Mike Bloomgren (age 36), Al Borgess is nearly 60 years of age making an opportunity for advancement in Ann Arbor much more likely in the near term than Palo Alto.
This provides a fresh ofensive perspective, helps procure QB stability, aids TE development needed for an underperforming unit and strengthens access to west coast recruiting.