Get rid of the hit at the scrummage and go back 20 years so that the front rows go down on their own first. They bind and lock, and then the back five come in afterwards with their weight. You take away the hit and the illegal drive before the ball comes in. It would be far easier for referees. Also how about a mark anywhere on the field rather than just inside the 22? That might put an end to any aimless kicking.