I've been lurking here for a couple of weeks and when I read Jacksfan29 post, I felt I had something to contribute to the conversation.
The 4 Dakota schools are completely different... well, mostly. All four schools came from the Division II North Central Conference (NCC). Since all four of the schools have arrived in Division I in the past 10 years, I am using some Division II info for reference.
I am graduate and fan of the University of North Dakota, which is known for it's hockey, http://www.theralph.com/. Grand Forks is 70 miles from the Canadian border and is filled with Canadians shopping on weekends and it is a hockey nuts community. North Dakota does have a rich history in basketball and is second only to SDSU in the number of conference titles won in the old NCC. SDSU had 20 and UND 18...
http://northcentral.prestosports.com/Record_Book/08_Updates/08_MBB.pdf.
UND also produced a guy names Phil Jackson back in the 60's. You may have heard of him.
UND has also been historically a pretty good football program, finish second in number of NCC titles behind NDSU, 26-24. I know no one has mentioned UND as a possible candidate, but I have included them for Dakota perspective.
North Dakota State has been a football school. They were very successful in the DIvision II and then ran into a drought in the 90's and 00's. When they reclassified to Division I (FCS), they started building that program back up and have won the FCS Championship the past two years. Their basketball history, isn't as rich. They were a middle of the conference performer for the most part in the Division II ranks and have had some success in Division I, mostly because of a player that has since graduated, Ben Woodside. He brought NDSU to the Dance once. Like UND, NDSU is remote. It is 75 miles south of Grand Forks, which still puts it closer to Winnipeg MB than to Minneapolis. NDSU keeps talking about the renovation of the BSA, their dump of a basketball facility. They still are short of the funds to begin construction and even then I think they polishing a turd. http://www.gobison.com/ViewArticle.dbml?DB_OEM_ID=2400&ATCLID=69829
Like I mentioned above, SDSU won more NCC Men's BB titles than any other schools. Their football program, has always been middle of the conference. I just don't think football has been a priority in Brookings. It has been and continues to be a basketball school. They have been in the MidCon/Summit now for 5 years and between the men's and women's programs have won 7 of the 10 titles in those five years. Geography wise Brookings is 200 miles closer to the MVC footprint than NDSU. SDSU plays in Frost Arena. http://en.wikipedia.org/wiki/Frost_Arena. Frost isn't big, but it does have a nice basketball history and feel to it.
University of South Dakota is little further south than Brookings, putting it a little closer to the MVC foot print. USD is SDSU's little brother. They too are a basketball first school, but It is a smaller college and just doesn't seem to have the athletic history of big brother. They play currently play basketball in the DakotaDome, although there are plans for a new facility.
Conference perspective..
North Dakota was fortunate to get an invitation to join the Big Sky, as it is an outlier as far as conference mates. Unless North Dakota decides to go to FBS, I hope UND stays in the "mostly" football first Big Sky. I don't ever see basketball surpassing hockey
NDSU, like I said, football school. They seem to be content in the MVFC/Summit. If the Summit blows up, they need to look to the west, Big Sky. They will never fund BB over football.
SDSU.. of the four Dakota schools, they are the best candidate for the MVC. Even more so if they decided to dump their football program and put all of their money into basketball. They have a nice facility now and have basketball fans and history to boot.
USD, little brother. If the MVC is looking for two, little brother may fit the bill, as they love their basketball is South Dakota and they are building a new facility.