This rule and the way it was brought in is a blight on the game. And Blight coached Geelong so f*ck him.
Seriously, you take a mark or are awarded a free kick the fair thing is you can kick, handball or run from that spot, rather than the man on the mark standing on that spot and you kick, handball or run from some point metres behind that. So instead of the player with the free kick going back behind the mark he stays on the mark and the player guarding the mark is taken back say 5-10 metres. From that point, allow the player on the mark to move in any direction he wants but not into the protected area until the player in possession has played on.
Seriously, you take a mark or are awarded a free kick the fair thing is you can kick, handball or run from that spot, rather than the man on the mark standing on that spot and you kick, handball or run from some point metres behind that. So instead of the player with the free kick going back behind the mark he stays on the mark and the player guarding the mark is taken back say 5-10 metres. From that point, allow the player on the mark to move in any direction he wants but not into the protected area until the player in possession has played on.