North Dakota would be the MWs new Boise. They almost beat Colorado last year and are heavily committed to the football program.
I think they'd probably be pretty competitive in 2-3 years assuming they could afford the increased program costs for division 1. Their ceiling might be Boise, but I don't think they have the infrastructure/income/population to actually be a perennial threat for a playoff contender like you see in Boise. Their football stadium seats fewer people than the T&M. They don't have a good population base or media market and a relatively weak alumni base, and in the modern NIL landscape grooming your kids for 5 years in a system that takes unrated guys and develops them will be much, much harder.
We can look at contemporaries over the last 15 years and find out how long it took each FCS club to make the top 3--please note these conferences in general are much weaker than even the reduced MWC.
Lets look at the last 15 years:
WKU - Sun Belt - 3 seasons (1 FCS title, 8 playoff appearances)
Texas State - Sun Belt - 12 season (2 playoffs appearances)
UMASS - MAC - Still no .500 finishes in 13 years (1 FCS title, 8 playoff appearances)
South Alabama - Sun Belt - 10 years
Georgia State - Sun Belt 12 years, still no top 3 finishes
Appalachian State - Sun Belt - 2 years (3 FCS titles, 20 playoff appearances)
Georgia Southern - Sun Belt - 1st year (6 FCS titles, 19 playoff appearances)
Old Dominion - Sun Belt - 3 years (2 playoff appearances)
Charlotte - CUSA/AAC - 10 years, still no top 3 finishes
Coastal Carolina - Sunbelt - 4 years (6 playoff appearances)
Liberty - CUSA - 3 seasons (1 playoff appearance)
James Madison - Sunbelt - first season (2 FCS titles, 18 playoff appearances)
Sam Houston - CUSA - 2 season (1 FCS titles, 13 playoff appearances)
Jacksonville State - CUSA - 1st season (10 playoff appearances)
Kennesaw State - CUSA - 2 season no top 3 yet (4 playoff appearances)
NDSU has the best FCS resume of all those teams 10 titles in 15 appearances
So, I don't think it's crazy to predict NDSU could have instant success, but I do think that the overall strength of the MWC will be higher than what you'd see from the Sun Belt/MAC/or CUSA (though next year's sun belt might be where that transitions), so i do think it would take a few years of transition (plus, most of the totals i put before didn't count a teams 1 year usually as an independent before getting into a conference). I think the difference in our opinion is based on the predictive strength of the MWC.