Matt Grzelcyk is a saving grace for this team when it comes to transitional play and driving possession in the right direction. Everyone wants to get bigger and badder and stronger, but I still don't think players like Grzelcyk is why this team lost or has been losing series. I think it's what happens when there's a lack of competition in the lineup and a lack of willingness to cut ties with veterans who mirage this idea of a "safety net" like Wagner and Kuraly.
I mean, yeah Grzelcyk had one really bad game and that was definitely an ugly one, especially given his uncharacteristic unforced turnovers. That said, how did all the big players fair in the lineup this postseason?
Miller, cheap-shotted and knocked out.
Lauzon, banged up from his rugged style of play and clearly not 100%.
Carlo, biggest defender and knocked out by a smaller player.
Zboril, bigger than Grzelcyk and also knocked out of the lineup.
Ritchie, just a minimal impact in two series that were tailored to his skillset.
It's clearly an unpopular opinion, but I still maintain the Bruins didn't lose because of size. They lost because they had two legitimately horrible options on L4 (Kuraly and Wagner) being routinely caved in each time they were on the ice. Cassidy was essentially throwing anytime he put them out there and the analytics back that up. Nick Ritchie, Charlie Coyle (injured, in his defense) and Jake DeBrusk were all in the same boat as well. Size is certainly something relevant to the NHL, but so is transition and play-driving from the backend.
The team lacked assertion, hustle and conviction outside of L1 and L2. It's not about being the biggest and baddest players on the ice, it's about being desperate to win and I just didn't see enough of that from this group this year or even in 2019 against the Blues (Especially on home ice in Game 7). Rask being injured obviously didn't help because he couldn't be the backbone for as many desperation saves as he would usually make given his detrimental injury.
I don't want Cassidy fired because I think he's a good coach, but I would certainly bring up Jay Leach to assist him on the bench for next season because that's a guy who's players seldom–if ever–take a night off on the ice. Cassidy's coaching and personnel decisions certainly played a decision in what happened this post season, as did injuries, bad luck and stagnating players. It's always easy to blame the small defensemen and GM though.
Leaving Matt Grzelcyk exposed would ensure that Seattle would take him. Even if they didn't want him, they would just turn around and trade him for something significant in value. This fanbase's hatred for smaller players, especially defensemen, is sometimes outrageous.
Even from a pure hockey standpoint and roster building angle, I would 100% protect Grzelcyk over Clifton. If I'm Seattle, I would take Clifton in a heartbeat, but I would take Grzelcyk even quicker if he were to be available.