Commissioner Rob Manfred has sparked discussion about potential MLB expansion and realignment. This has led to ideas about restructuring the league based on geography and traditional rivalries. But what if market size were used to reorganize teams? With collective bargaining on the horizon, competitive balance is a key issue. If owners push for a salary cap, it could lead to tough negotiations. But if realignment created divisions based on market size, that setup could offer small-market teams a better path to contention.