The history of trades between the Mets and Marlins is a fascinating study in division dynamics - a rare case where two rivals have frequently served as each other's most prolific business partners. While most teams are hesitant to hand a silver bullet to a direct competitor, the Mets and Marlins have spent decades swapping franchise icons, All-Stars, and top prospects in deals that have reshaped both organizations. From the fire sales in South Beach to the "win now" gambles