But NHL rinks aren't built to be able widen the dimensions except for the old Saddledome anre d maybe one or two others. Back in the Olden days the NHA, had 6 skaters aside when the NHL was formed(1917) out of the NHA they did away with the rover position or 6th skater and played with 5 skaters aside. The players then wore little equipment and were on average 150-165 lbs and not much more until later when the behemoths took over. And we have pretty much behemoths in goal on every(NHL) team. And it kills excitement these goaltenders that don't even have to "move" to make a save. Where the players have to score into an area barely 1 inch by 3 inches. Scorers need to be sharpshooters, marksman, while the tender needs to be lumbering,giant ogre. Well hockey needs to go 4 on 4 to show the World,its the Greatest game on Earth bar none! Fastest by far,Most difficult to play and master by far. Takes the most talent and skill but more than that you have to have a hockey IQ and be able to think the game and platitudes go on and on