The old Boston Garden was one of the most iconic NHL home-ice advantages with the way it was constructed.
Times have changed in professional sports when it comes to arenas. The fan experience is so different from what it was a couple of decades ago. Arenas are a lot different nowadays with the Jumbotrons that have been placed in the new arenas and get the fans involved.
A lot of the new arenas are built bigger than some of the original ones, and it keeps the fans a little further back from the players on the bench and ice, something that wasn't always the case back in the day.