Also regarding Granlund, I think he has been regressing for years but his horrible performance in Pittsburgh is largely due to Sullivan once again putting a player in a position to fail. He has always been a cerebral playmaking winger that could sub in at center in a pinch. It's why his most successful years in Minnesota were when he was playing RW with Koivu and Zucker. He used to be really solid defensively (at least analytically), but that was him as a RW with a strong 2-way center in Koivu, not as a strong 2-way center himself.
Granlund has been declining for years though, his defensive metrics started slipping a bit around 2018-2019 but absolutely cratered in the 2020-2021 season. His offensive metrics fell off a cliff shortly after that, which brings us to now.