Batter’s practice and pre game warm ups don’t take place during the game. In football, line shifts, and man in motion action all takes place in the game and before the snap and it’s very much a part of the game. Listen to the crowd noise when the players are rushing to get a play off or when the QB is pointing out a defensive shift before he gets the ball. To football fans it’s exciting.
I understand that. Let’s find a better comparison to baseball, then. I’m sure a lot of baseball fans find it fascinating when a catcher runs through his signs and the pitcher keeps shaking him off, but I don’t think that adds a ton of excitement to the game for the fans.