Who's opposed to it?
As you'd probably know, the HAL (Aussie top league for all the colonialists on here) uses post-match review for diving, among other things, and players have been suspended. It's implemented very bady with zero consistency, but it's there. The dive in this video is disgraceful and worth of a suspension itself.
I'd love to see video panels get more aggressive on diving - fortunately, the problem of players squaring up then dropping to imitate a hit (or at a slight touch of the forehead) hasn't really come up down under, but its disgusting when it happens.
But then, there was one in the WC when it happened and the player received a second yellow and most people were saying the yellow was harsh! People don't have a clue what they want!
Personally, I think the only way to deal with divers is to start docking competition points if the dive changed the result of a match.