No novelty because there became too many outdoor games, and there is no semblance of a rivalry. A Caps Winter Classic should have been played against the Penguins, Flyers, or Rangers. It's basically just become a nice event for the team hosting it. Perhaps even less buzz because it's the third time the Blackhawks have been involved outdoors, they were in a game less than a year ago. It's likely not even that big of a deal to the Blackhawks players at this point.
NBC is also going to start running into trouble. Before, the 1pm slot was a weak spot in the sports schedule, with only some decent bowl games to go up against. This year, it's a better bowl game, and the college football playoff has everyone talking about that.