The Real Sports piece on PitchFX showed how they could implement an automated zone. Pitch is thrown, computer in booth instantly shows ball or strike, operator tells ump through ear piece, ump calls pitch. They tested it independent league games and everyone was thrilled about it. The road block is the umpires union. They had a retired ump on the show who bragged that when the league gave him video to review from his previous games, he would just throw it in the trash. He had no interest in someone telling him he could do better. He even went on to say that if he had an earpiece during his umpiring days that he would have ignored it. This mentality ruins everything. A switch to PitchFX would have to be paired with a complete dismantling of the umpire union