So here is the absolutely massive problem, the strike zone in the rule book is 3D. The ABS strike zone is 2D. The 3D strike zone when they tried doing it was a tracking nightmare, but also hugely favored pitchers because it called strikes on pitches that would nick the front corner and drop or enter the zone from the side of the plate, and a bunch of other things that human watching it would call bullshit and unhittable. You don't want modern pitch design going for designing maximized pitches to exploit a computer zone. The problem with the 2D zone is where you place and the shape has a big deal, and it is also much different than the muscle control and perceived zone that the player knows from playing baseball.
Humans are fallible, but the thing human umps actually do decently well is call a "fair" zone as in one that represents the hitting zone. They tend to be fooled on pitch movements much like hitters and so the zone sort of has adapted into what we generally think of it being. Once you put a box on it, the whole relationship and feel for it changes.
