I'm not aware of Chayka's evaluation methods...but if you want to talk about fond recollections, there was a lot of speculation on this very message board about how the Jets' style had changed between the 17-18 season and the 18-19 season. Still basically the same lineup - minus Enstrom. There were injuries in 2017-18 that were just as significant (Scheifele, Lowry, Trouba and Enstrom) as 2018-19 (Buff, Morrissey and Ehlers) and that somehow didn't derail the team. And yet...the Jets were not playing the same forechecking style that got them so far the previous year.
I thought the team did much the same thing in 2015-16 after finally making the playoffs the year before. Backed away from the aggressive game and retreated into a shell. Maurice was talking about how the young guys had to learn to play defense. You can see the drop in the xG chart - though not as catastrophic as 17-18 to 18-19. Dropping 4.53 in xGF% in one season with basically the same lineup must be some kind of record. The time to fire Maurice was as plain as day, but they decided to extend him.
Oh, but Maurice - the players love him. Well the vets sure do. "You want a country club where you're never held accountable by the coach no matter how terrible you play? Come to Winnipeg!" - Stastny to Schmidt, probably...