I guess I'm having trouble understanding your point. Of course the rule that I'm proposing is based on dimensions. Baseball has dozens of rules based on dimensions. Distance between bases, size of the batter's box, size and weight of the ball, size of the bat, etc. I'm just saying that the rule defining the size of the strike zone should be consistent with every other rule in that it should be the same for every player rather than basing it on the height and stance of a player. The reason I'm focusing on this advantage is that it's the only instance where a rule of the game is based on a specific physical attribute of a player. Of course some players have advantages due to certain physical attributes. I have no problem whatsoever that a player's running speed, bat speed, throwing strength, weight, or whatever may give him an advantage. But the rules of the game are the same for all players regardless of any of those physical attributes. So why should the rules not be the same for all players regardless of height?