Putting aside the "can't celebrate" argument (it hasn't stopped rugby or cricket yet - but it adds "disappointment" as we found out in April), I generally support it, but it has to been shown to the paying public, and the decision explained, so there can be as little ambiguity as possible. Last night in the USA game, a penalty was given for a foul by the use of VAR, but the foul wasn't inside the box, it was just before play entered the box. The referee missed the "foul" and gave a corner, it's then checked by VAR, and eventually the referee, and she changes her original decision. Even on TV its not clear if its in or out of the penalty area, but it's definitely a foul, so she gives a penalty because its tight, and she missed the foul. On the half way line that's not checked, 25 yards out it's not checked, 3 yards out it's not checked, 1/2 yard out it's checked, and subsequently changed because it might have carried on into the box (unclear from the various angles), but as its "close" you can do anything you want, and they will. Another thing, its been clear (on TV) that the replays offered to the referee are at best subjective, sometimes only one (familiar ??) is offered by the VAR team, again it can be manipulated, so all angles need to be available (and used), and shown on screen in the stadium with an explanation from the referee as to why they have made the decision, only then will it be pretty transparent, and an improvement.