Interesting, it could work. So you put sensors in the uniform, how much of a crouched batting stance do you allow? Because there would be a lot more crouching that the umps don’t generally take into account now. You could have a whole generation of short speedy slap hitters and bunters who do everything bent over at the waist, like submarine hitters. Who makes sure the sensors are in the right spot and calibrated?
You could put the sensors on something the players can’t manipulate. Like every player has a set height at their normal batting stance and two posts far away records the height of the ball crossing the plate for that batter. The problem is if a batter uses a radically different stance according to the count and game situation, so maybe that wouldn’t work either. Or you use a formula for the player’s height and discount whatever stance the batter uses.
Freegards
Let them crouch, you basically point out why they won’t really want to, no power hitting. And it would put more of the slider destination in the strike zone, so they’d really be easier to get out, and less risky when they got a hit.
Works for me. Give the plate umpire a stool ten feet behind home and a novel. When there’s a play at the plate he can get up, walk over and make the call.