I didn't say impossible: I said difficult. And, you have to be a bit lucky. And, the "outright" championship happens very seldom.
Alvarez and Ferentz have had administrations that have dedicated themselves to having good, competetive programs. (iowa has done this since back in Haydon's day.)
It is going to be a while until the U of M breaks above the 5-3 "level" of having a good, solid program and having a little bit of luck to go with it. It's going to be a long, hard pull. It will be worth the effort. There is the possibility that someday it may happen IF the new prexy brings in a top-notch AD who realizes that the Football Program needs the most attention and will be essential to all the other programs supported by the athletic department.
Obtaining a new football coach can bring hope...but...it also DEMANDS a great athletic director and a strong enough prexy to keep the committment to the football program to mean more than just "talking about" having a committment to provide a strong football program for the players, coaches, fans and the state of Minnesota. To do that, the level of committment will need to go WAY beyond what prexy b and maturi have done. WAY beyond...
It takes a LOT more than having an on campus stadium and bringing in a new coach every 4 or 5 years. And, when you get a coach who improves things, the administration needs to improve things on their end too. The new stadium probably kept brewster from being any worse than he was. He was over-matched and under-experienced and too much talk and not enough coaching. The new coach will have the stadium in place but, he will need a lot more committment from the administration than just that. After only two years, the thrill of the new stadium is gone. Now it it time for the administration to dig deeply. The administration MUST be upgraded from what we have had.
And, it still will be tough to climb above 5-3 in Big Ten play.