I disagree.Everyone keeps saying that it will stop all this flooding and rolling zones. IT'S NOT, IT HASN'T. Last year with one sub made no difference to the look of the game at all. They are taught to play in a way they can run the maximum amount they can. They are trained to run great distances from contest to contest. No interchange rule is going to stop this. They will just run themselves into injury, and then they will have the required weeks off to mend that injury.
If we want to stop the flooding, and the rolling zones, then we make forwards not be able to enter the opposite ends fifty, and the defenders can't enter the forward fifty. How does the umpires police this, simply make a number that each end can't exceed, like 10, and if it appears their is more than 10 in either end for one team, then the umpire blows the whistle and pays a free. Simple and easy.
Teams will realize soon enough that forcing the entire team to run back and forward up and down the field all day to follow the ball will result in player fatigue, poor last quarter performances, and potentially soft tissue injuries. A reduced bench will force teams to keep their limited rotations for the mid fielders and leave the key position players in their positions, not running all over to form zones.
The teams need to adapt to the rule changes. Limiting interchanges by either limiting them directly, or decreasing the numbers on the bench will force teams to adapt, or they will eventually suffer.
I'm all for it. Some of the games we have seen recently with so many players around the ball, or heavy flooding by both teams have been virtually unwatchable.