Adding two new teams would allow MLB to even the two leagues out at 16 teams apiece, making daily interleague play no longer necessary. It also creates the opportunity for realignment. Manfred hinted at the possibility of wholesale realignment based on geography during an appearance in ESPN's Sunday Night Baseball booth this past weekend.

The idea unquestionably would create one of the biggest shake-ups in baseball and likely end the long-standing format that MLB has operated under for more than 100 years.