In addition to the merger with the 12-team Japanese league, expansion teams are added in Mexico City, Vancouver, Montreal, Charlotte, Nashville, Portland, New Orleans, San Antonio, Oklahoma City, Salt Lake City, Jacksonville, Las Vegas, Buffalo, New Jersey, Norfolk, Louisville, Hartford and Birmingham. Also, the Mets move to Brooklyn, the White Sox to Indianapolis, and the Athletics to San Jose, while the Angels change back to Anaheim. North America is divided up into Eastern and Western conferences, no more National and American leagues.
Atlantic Division: Boston, Brooklyn, Hartford, New Jersey, New York and Philadelphia.
Northeast Division: Buffalo, Cleveland, Detroit, Montreal, Pittsburgh and Toronto.
Metro: Baltimore, Cincinnati, Indianapolis, Louisville, Norfolk and Washington.
Southeast: Atlanta, Birmingham, Charlotte, Jacksonville, Miami and Tampa Bay.
Central Division: Chicago, Kansas City, Milwaukee, Nashville, Oklahoma City and Saint Louis.
Southwest Division: Arizona, Houston, Mexico City, New Orleans, San Antonio and Texas.
Northwest Division: Colorado, Minnesota, Portland, Salt Lake City, Seattle and Vancouver.
Pacific Division: Anaheim, Las Vegas, Los Angeles, San Diego, San Francisco and San Jose.
I am not going to list the 12 Japanese teams, yet they are divided into 6-team divisions as well. Each Japanese team would play one 3-game series vs. 24 of the 48 North American teams per season = 72 games, including one 36-game road trip to North America. They would also play one 4-game home and one 4-game road series vs. each of their 11 Japanese rivals = 88 games.
Each North American team would also play a 160-game regular season, including one 9 game road trip to Japan. In addition to one 3-game series vs. 6 of the 12 Japanese teams per season = 18 games, they would also play one 4-game home and one 4-game road series vs. each of their 5 division rivals = 40 games + one 3-game series vs. each of their other 18 conference rivals = 54 games + one 2-game series vs. each of the 24 teams in the other conference = 48 games.
A 16-team playoff field would include 10 division winners + 6 wild cards, regardless of division affiliation, meaning that 5 of the wild cards could come from the same division, and that any 2 teams from the same division could meet in the World Series. Each playoff series would be the best 5 out of 9, with a 3-4-2 format in the first 2 rounds, and then played at warm weather neutral sites in the semi-final round and the World Series.