Minuses: Boston has been too inconsistent. On some nights, the Bruins have looked like an outstanding team and then on other nights, they've stepped back. They've had too many losing streaks following winning streaks. Patrice Bergeron has been inconsistent and he's too good of a player to for that to be the case. He has 12 goals this season after scoring at least 30 in two of the past three seasons. Maybe it's a function of playing too much hockey, with Bergeron having played for Canada in the World Cup of Hockey 2016 prior to the season.
At times, the Bruins don't play well enough based on Claude Julien's system. There are some nights when you're watching them and defensively they aren't where they need to be or are capable of being.
Dominic Moore (eight goals) had a really good first half but beyond him, the Bruins will need more offense from their bottom six the rest of the way.
Lastly, from what I've seen, they only have one consistent net-front forward in David Backes, who is willing to go to the paint and pay the price. He plays the Bruins' style of game but when he was out with injury no one replaced that. Backes does that every game and no other player does it with any kind of regularity.