I agree that it would over-complicate things. Leave it to the coach. The game is 3 hours long! This will force teams to rotate players. Try leaving 3 (star) players on for an hour, whilst the other team is rotating players. They will get killed in the last 30 minutes.
If you don't think 3 hours is long enough, make the game 4 hours long. Or 5 hours.This is all we need to do.
I agree that it would over-complicate things. Leave it to the coach. The game is 3 hours long! This will force teams to rotate players. Try leaving 3 (star) players on for an hour, whilst the other team is rotating players. They will get killed in the last 30 minutes.
If you don't think 3 hours is long enough, make the game 4 hours long. Or 5 hours.This is all we need to do.