There is not going to be an automated strike zone - ever.
Football could be called via video, with refs., umps, back and line judges almost entirely taken out. A quick review of the play could call holding, illegal man down-field, pass interference, offsides, illegal procedure, illegal participation, etc. How many people scream about holding or a block in the back that has been missed? They say it happens on every play. Refs and line judges let a lot of it go as part of the game. Sometimes it might even impact the game. But, thankfully, people with foresight realized that doing this would be ruinous for the game. People would absolutely hate that sterile condition. So, humans do the job.
Sometimes those humans make mistakes, miss calls, etc. Sometimes those missed calls cause 'Bama to lose games and even potential national championship births. But in the end, so what? It's a game. It's something for amusement.
If you are hell-bent on computer precision, then perhaps 'Bot-fighting is for you.