This has to suck for gopher fans.
1. They can maintain their UW rivarly, but true gopher fans will tell you that one doesn't touch the UND rivalry.
2. The Michigan and Michigan State "rivalries" are pretty tame.
3. The Ohio State and Penn State matchups will be like playing Brown or Union in a holiday tourney, in my opinion. Maybe those will grow after about 5-10 years have passed, who knows.
As a UND fan, I don't have any real feelings on this right now. I would love to see us keep the rivalry with UMN and UW, but if it can't be salvaged, there are plenty of marquee schools to play in non-conference games. I think of the Bostons, Maine, UNH, Miami, Notre Dame, the list goes on and on.
I don't think the BTHC will affect recruiting for UND, and I know it won't affect attendance.