Where is all the complaining about goal scoring now? A lot of it has to do with all the quality young players, but I think the World Cup of Hockey 2016 was a huge help too, because it forced players to hit their stride and be NHL-ready much earlier.
A good example is Detroit Red Wings forward Thomas Vanek, who was impressive for Team Europe and has three goals and three assists in four games for the Red Wings. Boston Bruins forward Brad Marchand was the highest goal scorer for Team Canada at the World Cup (five goals) and has come out strong with three goals and six assists in four games for Boston. His World Cup teammate, defenseman Brent Burns of the San Jose Sharks, also has gotten out of the gate quickly with three goals and six assists in five games. I think the World Cup also spiked a lot of the intensity from players who weren't there, perhaps to prove they should have been or should be next time.