UND will join the Big 10.
Hockey will be the deciding factor. The WCHA is keeping BSU in close company so they can help fill in the voids when UND, UM, and UW leave when the Big 10 adds hockey.
The Big 10 will then proceed to split into 2 divisions, much like the SEC and Big 12. This will allow them to have a football conference championship game.
Another effect will be that my other school, Notre Dame, will never become a Big 10 member.