My problem with not arguing balls and strikes presumes that there is some limit, some bound to which a ball will never be called a strike. That call last night was so egregious that gets called into question. If that was a strike call, what can't be called a strike?
This is what replay, is supposed to do, by MLB standards. Stop the really bad, obviously bad, calls. That's the whole irrefutable video evidence thing. Have an umpire sitting somewhere with an agreed upon pitch track, reviewing every pitch and when a really bad strike (or ball) calls happens buzz the home plate umpire to change the call. No challenges. A ball on the bounds of the track called either way is fine but when a ball that far out gets called a strike, something is wrong and needs to change.