Side tangent, but I also don't like how every personnel decision (ie. trade, free agent signing, etc.) comes with the question "is he a Sullivan type player?". IMO, rosters shouldn't be built around the coach, especially when that roster hasn't gotten out of the first round since 2018.
Reminds me way too much of organizations who draft for need rather than BPA and end up with inferior players just because they were a better fit for their immediate needs even though they weren't anywhere as good as some of the players available at that spot who just happened to play a position that wasn't an immediate "need".
Using the Pens in this analogy, they'd be the team that passes on drafting Connor Bedard because he's a center and we've already got center depth so they opt for a defensive minded middle six winger instead because he fits Sullivan's system better.