Folks who are underselling how big the WIsconsin job is (and can be) have basically ignored the Big 10 for the last 20-30 years. Alvarez and Bielema had huge seasons there and were in the hunt for the National Title on multiple occasions. Madison is an absolutely fantastic College town and Wisconsin has a very engaged fan base. Fickell will not have any issues recruiting thtere. The big question is always going to be the same when you have a mid-major coach jump to a big program. Will their style take hold at a program where the stakes are higher, the schedule is much tougher and pressure is more intense.
Someone also mentioned Nebraska. Let's not forget that Matt Rhule is going to bring an exciting brand of offense to the Big 10. He is also going to have an incredibly rabid fan base that is going to be throwing NIL dollars around like Monopoly money. I look for Nebraska to become one, if not the biggest player in the transfer portal under Rhule. I wouldn't be shocked if they followed Tennessee's path with a very quick return to glory.