I would characterize the Alvarez philosophy as an offense built on stud offensive lineman blocking for power backs. I wonder if Fickell will depart from that.
I would suggest that a large part of Alvarez' philosophy also involves maintaining a very strong walk-on program, and the attendant culture and mystique that has been built around their success in doing so. During Alvarez' tenure, 107 walk-ons went on to earn full scholarships while 25 of them went all the way to the NFL, including All-Pro level players like Jim Leonhard, JJ Watt, Mark Tauscher, Joe Panos, Ryan Ramczyk, Joe Schobert, Mike Schneck and others, and beyond that UW has produced a very large number of highly productive college players ( while not quite top level NFLers) such as Troy Fumagalli, Jared Abbrederis, Chris Maragos, Jack Cichy, Chad Cascadden, Luke Swan, Jason Doering, Donnel Thompson, Ben Strickland, and on and on, all of them developed through the walk-on program. Basically that endeavor is like an assembly line which continually just churns out very high quality players.
That kind of success carries weight with current players, some of whom will bypass full-ride scholarships at other institutions in order to take part in the walk-on program at Wisconsin. Take John Torchio, one of the mainstays of their current defense. He was a legacy kid at Cal, with his father and grandfather having played football there before him. He grew up minutes from the campus in Berkeley, regularly attended home games, and even had Aaron Rodgers visiting his home, but despite all that pull in favor of Cal, Torchio STILL bypassed a full scholarship there in order to walk-on at UW (where his sister plays on the soccer team). That's the pull of their walk-on program, and it is very justifiably earned.