BCS conferences can handle the travel costs. Stretching something from North Dakota to the Rio Grande to Indiana had better be football-only, and even then it's borderline ugly.
Good point, Pounder. The concept of a "conference" suggests, preferably, something more than convenience by associating similar status schools together. Conferences, particularly those that are not at the top level of competition, often suffer drawbacks by far-flung membership. It poses challenges in terms of travel costs and cultivating rivalries that are economically feasible. Playing fb only, only empahsizes that the connections between or among the schools are conditional and limited.