One of the issues to overcome is that football is a lot less stop/start than other sports that have off-field reviews. Like: cricket, rugby, american football, tennis, baseball (do they have reviews?).
The play in football could go on for a couple of minutes (or more) after an incident before the ball goes dead. As we've seen, bringing back play several phases for a review that may or may not show something has its own problems.
One of the issues to overcome is that football is a lot less stop/start than other sports that have off-field reviews. Like: cricket, rugby, american football, tennis, baseball (do they have reviews?).
The play in football could go on for a couple of minutes (or more) after an incident before the ball goes dead. As we've seen, bringing back play several phases for a review that may or may not show something has its own problems.