This killed us numerous times yesterday. The half forward line would start on the edge of the centre square, then run in to contest the centre bounce. The North defenders, though, would often hang back, knowing that if a Melbourne player got the clearance, the resulting kick would end up around the half forward line, where the North defenders could take the ball. It was a poor choice of strategy.
You also mentioned the rotations: there was one instance yesterday where a Melbourne player was called off the ground, leaving his opponent to take an uncontested mark just seconds later. I couldn't believe that a player could come off the ground when he was in such a position.
Certainly the coaches' strategies are playing some role in our performances.