This is about the biggest possible Frozen Four you could come up with. Destination city. 3 MASSIVE fanbases (UND, UW, UM). UND and UW for instance have been #1 and #2 in college hockey attendance for years with prideful sports cultures. Michigan probably has the most iconic college sports program across all sports (Maize and Blue, Big House, alums everywhere).
The only bigger line-up would be exchanging Denver for Minnesota (large fanbase & MN) or BC/BU (to get the east coast & MA engaged).
If you said, come up with the biggest possible F4...it's UND, Michigan, Minnesota, and dealers choice of Wisconsin/BU/BC.