Its something that's always surprised me how NHL teams don't utilize the full 23 man roster.
Soccer, a sport that is way less physically demanding, and plays way less games, and has way less travel, has pretty much universally accepted the concept of squad rotation. It baffles me why, especially on back to backs, whats the harm in swapping out a couple of 3rd or 4th liners for a game to help keep them fresh?
To make it happen, its going to have to take a bold and successful coach to start doing squad rotation, and then go deep in the playoffs with it because his players are "fresher". Once Sir Alex Ferguson introduced it at Man Utd, and they were winning trophies galore that way, other teams followed suit.
But I also agree with those who say we need to stop playing Z and Kronner for 20 mins a night.