Nope.
Instead they are trying to follow the NFL model which has forever been a disaster.
Soccer/Football works in Europe because of the league structure.
I'd like this too, and I think it would be fun to see in other leagues too. Sorry Browns and 49ers, you're now playing in the CFL; we get Calgary and Ottawa.
But, we just don't have the depth to do it. Most European countries have scores and scores of teams that are well supported. There are teams playing in the third and fourth tiers of English football play in front of more fans than many MLS teams. The same in Germany and probably other places, though I know them less well. There are a few soccer made cities, but even many enormous markets that can't keep stadia half full despite populations in the millions, or else can't even keep their teams in town. So how could you find places to put another few dozen teams to fill a lesser league? That being done, where do you get players? Who would watch the game? Who would pay for them?
Baseball could probably do it if they wanted to, given they already have successive tiers of minor league teams (which they never will, given that nearly all minor league teams serve as farm teams for major league teams). The NFL's minor leagues are collages, which wouldn't really work (ok, Alabama is in the NFL now), but there's no question that collage ball graduates enough players to populate several new leagues, and there's significant support for football in the USA (though it may or may not be waning). The NBA is broadly similar.
But, the corporate structures of these groups mean it will never go down. No major league will dilute it's profits, and there's vastly too much money in collage ball to want to dilute that with more lesser leagues.
Plus, many American sports leagues are more even than top European football leagues. How many teams really have a chance to win the Prem, not just this year but this decade? Four? Six? How about the Bundesliga? Three? Bayern Munich and two or three with half a chance each? Does anyone outside of Barcelona and the Madrid teams have a chance in Spain? The fact that American teams are able to draft from their lower divisions, that we have free agency in place of hundred million euro transfer fees, and in some leagues (but not others) well regulated and enforced salary caps means a lot more mobility from the top of the table to the bottom, even if it's impossible to ever fall off. For a majority of teams, the season isn't about trying to win the league, but about avoiding relegation. The NFL is terrible at a great many things, and it makes me feel slightly yucky to praise them, but because they do love making money so much, they've become very good at creating a league where a lot of teams have a chance to win, and I think there are other leagues that could benefit from a few of their practices (though none having to do with morality or social justice)