Being a referee myself, l find that each week, that l carry out games, we are on a loser, for the simple reason is, if the Ref's at top level, cannot get it right, how the hell do they expect us to get it right at lower level.
There has to be a camera on the goal line for example, if that ball crosses that line, in a bunch of players, the ref, and ass. cannot see it, and the goalkeeper is laying over the ball, just think of the 'goal' at Man Utd v Tottenham, when the ball was TWO FEET over the line and the ref and linesman, didn't see it.