James Hagens with David Pastrnak on the top line? Dean Letourneau at No. 2 RW? Assessing future lineup strengths and holes.

Lastly, there have been a handful of retirements so far this summer, and three former Bruins officially hung up their skates within the past week: Blake Wheeler, Riley Nash, and Jaroslav Halak.

From jerseys that stood the test of time to duds that teams couldn't ditch soon enough, here's the best and worst for every ...

— Fluto Shinzawa Buffalo Sabres: C+ The Sabres did well to fill two needs when they traded JJ Peterka to Utah for right-handed defenseman Michael Kesselring and winger Josh Doan.

Fluto Shinzawa is a senior writer for The Athletic covering the Boston Bruins. He has covered the team since 2006, formerly as a staff writer for The Boston Globe.

— Fluto Shinzawa Trading away JJ Peterka has left the Sabres with a need for more proven scoring. (Harry How / Getty Images) ...

With the free-agent frenzy around the corner, The Athletic asked its NHL staff to identify the toughest decision for all 32 teams.