With regard to the fidgeting on the mound and the batter stepping out of the box, baseball needs to confront why they're doing that. The players don't do it to be irritating to fans, they do it to "slow the game down" so that they are focused. That, or to try to get into each other's head. Whether they are correct in their belief or not, batters and pitchers alike, they're going to find every way they can to maximize whatever time between pitches is allowed. Trying to get to the root cause, if possible, seems like a better solution than an arbitrary time limit With regard to pitching changes, I'm not in favor of limiting the number, but why do we have to sit through several warmup pitches, after the reliever has been doing exactly that for the prior ten minutes? Make the reliever come to the dugout before the pitching change can even be called, and then have him trot straight to the mound and get to work. (Bullpens may need to be redesigned so that there is a good route to the dugout while staying off the field of play. A tunnel can be dug, as a last resort.)