A rule change that has already kind of interested me is powerplays continuing even after a goal has been scored. I believe some leagues have experimented already with this change. This will increase the amount of powerplay ice-time within a game which will also increase the goals scored per game. Both of these changes make the game more enjoyable for the players (at least the ones getting to play on the powerplay, maybe not so much the penalty killers) and also make the game more enjoyable for the viewers. The sole reason I dislike rule changes within established leagues, especially ones that impact scoring rates is it makes it more and more difficult to compare players between different eras. With that being said, change is important to keep things fresh so a change like this could be spicy enough to do so while also keeping the integrity of the game there.