I for one was not happy to see Roughead go, especially since we have a dearth of experienced ruckman. One thing I can say, there were a majority of posters on this board happy to see Roughead leave. With Campbell also leaving, that has left the cupboard a little bare.
As for the rules, well, 6.6.6 will prove nothing and won't change a thing - waste of time rule.
Grabbing the ball out of the ruck around the ground will take us back to the old days when Darcy was the master at it. It will have a big impact on the game, and the ruckman that can perfect it will give his team first use of the ball.