Well heck...we just don’t need umpires. You have the solution.
Thanks! We still need them for calls on the bases, and to decide if a batter checked his swing, to determine if a fly ball was caught or trapped, to invoke the infield fly rule, to call balks, and the like. For balls and strikes, it should be done electronically. The home plate ump should have an earphone that beeps if a ball passes through the strike zone. Then, he could stick his right hand up and everyone could think he's a genius. I don't want to know about high strikes or low strikes or pitchers who work the corners and then get the ump to "extend the strike zone." Define a strike and stick to it.