Scoreboard watching is an important part of attending a game. Find a way to write a rule that automatically fines or suspends players who leave a bench or the bullpen for the sake of a brawl. The game is the most competitive of all four major sports. Market the players, and you wind up with a bunch of spoiled, selfish brats. Market the game and you will have a fundamentally-sound product.
Fans love baseball exhibits.
People in Seattle and Kansas City, for example, would love to see a Babe Ruth jersey. Make sure that when Boston builds its new ballpark, the outfield dimensions are the same as in Fenway Park. That's the best way to honor the old park. Otherwise, a century of statistics is out the window. Appeal to Yankees owner George Steinbrenner that he could be a hero by keeping the Yankees in the Bronx.