Yes, judgment calls like holding, pass interference, or touch fouls in basketball. Same with any contact sport. But tennis has been helped immeasurably by Hawkeye (now the only meltdowns against officials are by pathological whiners and psychos like Kyrgios and other recent retirees). But if computers can do it quikly and efficiently, go for it. (How boring are hitters whining about every call that doesn't go their way). Also, arguing with officials should never be considered a traditional part of a sport. Recently had a AA game ruined for me by a belligerent a-hole yelling at an ump for 4 innings for a call he (of course) got right. Time to get that out of the sport.