from Matt Kalman at NHL.com,

Here are three key questions facing the Bruins:

1. Can the defense improve?

The Bruins ranked 20th in goals-against per game (2.78) last season. They bought out Seidenberg's contract but seven of the nine defenseman on the roster to end last season return.

Until the Bruins' prospects are NHL-ready, they are hoping the incumbents will make strides. That means Colin Miller and Joe Morrow, who re-signed as restricted free agents, have to take advantage of their opportunities to contribute, and veterans Adam McQuaid, 29, and Kevan Miller, 28, have to thrive in bigger roles. Captain Zdeno Chara, who will turn 40 on March 18, has to maintain a high level of play. The Bruins also will rely on the addition of assistant coach Bruce Cassidy to bring some new ideas. He was the coach of Providence of the AHL the past five seasons.

2. Can the Bruins make up for Loui Eriksson's departure?

Backes should provide the Bruins with a presence similar to what Eriksson supplied on the power play and be another workhorse on the penalty kill. But Eriksson scored 30 goals last season and Backes had 21 with the St. Louis Blues.

A healthy Krejci, a more mature David Pastrnak, a full season for Vatrano, and an improved Jimmy Hayes, or some combination of these elements, could make a difference.

more including reasons for optimism...