Other than referees actually applying the existing rules properly, what other advancements do you think would improve the game.
As for the idea of sin bins, it is not a panacea for all of footballs ills but it might be step in the right direction.
I think the biggest chance would be to have a stopping clock. This would immediately stop any advantage gained from time wasting.
There would however maybe a need to look at 90 minutes game time as with all time afded on when the ball is not in play would extent games to over 2 hours.