IMO.... there are good commetns about changing rules, the problem is that removing players, in such a big fiel will kill the rest of the player, the strategy must have to change so much, that the teams will lose their particular way to play. That would be like removing a QB from football, both teams will have to play only by running, and not having able to throw a long pass will affect must of the teams. Unfortunately, i belive that penalty kicks are not the best way to end up an important game, because you can have one of the teams making a great game, attacking for 120 minutes and the other can just play defensibly and at the end win just with one good shot at the penalty kicks... but changing to another to end up a game, will kill the essence of soccer.