If you had a 'game clock' that was stopped when the ball wasn't in play, there should still be sanctions for unnecessarily delaying the game or you'd have endless 'drinks breaks' and players going down with 'cramp' so their team mates could have a quick natter with the manager. Or perhaps it should be more like American football, where you'd have a fixed amount of time to take a throw in or free kick. Fail to do so and it's awarded the other way. I know it isn't traditional, but the endless time wasting really irritates me - and yes, even when we do it!