I am not sure I like the 12 or 14-team/2 Division models, but other conferences have done it like the CUSA, ASUN, & Big South. The MVC has been looking into this for the last 4+ years, since 2017 when they added Valpo to replace Wichita State, and they apparently think the advantages outweigh any downsides.
The MVC presidents and AD's probably believe that adding schools from major media markets like Kansas City (UMKC), Omaha (UNO), Nashville (Lipscomb), Chicago (UIC), Cincinnati (NKU), and Dallas (UTA) would be a boost to the MVC
The 14-team/2 Divisions model would allow for every team to play home-and-home against the 6 opponents in their own division, and only one game with each of 6 or 7 teams in the other division. Ideally, that would cut down a little on travel, and it would give each team an 18 or 19-game conference schedule and allow for the teams to still play as many as 12 or 13 non-conference games.
Incidentally, Murray State is the only one of those rumored schools that is not anywhere near a large metropolitan area or a major media market. But it is a good basketball program, and it is only 100 miles from Southern Illinois University, which is likely what appeals to the MVC people.