Probably a better solution than what they have, but given the reluctance to use the Buffalo stadium for the Blue Jays, not sure if using minor league parks at that scale would work (also, double the size of stadiums needed given the "alternate camp" players). With the regionalized schedule they went for, perhaps a combination of LA/Anaheim/SF/Oakland for the West Divisions, Chicago/Milwaukee/St Louis or Minneapolis for the Central Divisions and the Acela corridor for the East. With the playoffs in a single location.