When a coach gets fired, a lot of the analysis turns to what effect their replacement will have in the locker room. Over the course of a coach's tenure, their mannerisms, their habits, their tropes lose effectiveness and cause players to roll their eyes.
This happens not only with the players, this can happen with the fans. Once we've been around a coach for a few years, something we may not have thought was a big deal in his first season becomes insanely frustrating. "Wait, Yeo's scratching Fontaine again?!" "Jarret Stoll on the third line?!" "Why on earth is Ryan Suter playing all 2 minutes on this power play?