To me, the ideal Nashville opponent would be Wisconsin. The Badgers are a long-established hockey rival. They're a big-name school that could generate some casual interest outside the two fan bases (like Pred fans). Their fans actually do travel (unlike Minny), and Madison to Nashville is not really that far (9 hour drive - half of what it would be from Grand Forks). Plus, North Dakota and Wisconsin like to party together, even if they're cheering for opposite teams.