The most crucial changes have been at the coaching level. Helfrich has now officially put his stamp on the program in terms of coaches. For arguably three of the most important positions he demoted the DC(Pellum) and hired a coach(Hoke) who while known for his defense has never been a DC in college. He promoted Lubick to OC despite his never having held that position previously and brought in a coach(Yost) who had been an OC(Missouri) as the new quarterbacks coach. A curious hiring strategy(I expect Hoke to grab the earliest Power 5 head coaching job available if offered to him) and after Helfrich's total meltdown in the second half of the Alamo Bowl as a coach(If your center / QB are having challenges then move the QB up under center...if you do not practice such a "Plan B" then that is horrible coaching)...nobody has more pressure on him than Helfrich. We will see. Go Ducks!