Option 2: If I wanted to change a rule in hockey I think I would look into something that would increase number of goals and maybe add little bit of chaos. So lets take a look at number of players on ice. When no penalties are in effect both teams have same number of players on the ice, 5 skaters and a goalie, which couldn't get much more boring. So we need to add more players and more space on the ice and to artificially balance the games to make the outcomes more uncertain. And now you ask how we do that? Easily, every time the team scores their opponent gets to choose if they want the scoring team to play with one less skater on the ice or if they want to add one more skater to their side. If team scores on powerplay their opponent wouldn't have this opportunity yet if team scores shorthanded they get to add one player to their side.