He really doesn't. It's just because everyone here watches the Rangers every day. I follow every teams line combinations every single day because it's basically my job and I can assure you almost every team does the same thing.
There's a context to this observation too. Quinn never mixes up the KZB line, even when it sucks 5 on 5 (frequently lately) and one or more of their players are taking the night off. If Quinn used the KZB line in his mix up rotation it would help the kids out more instead of choking them behind the big guns.
Quinn has been around for how long and
- the transition game is still sh*t,
- he rides his big guns to the max and hopes they come up big for him, and hopes for the best out of the rest RATHER than develop an actual TEAM (he doesn't know how to).
- the PP rotation is a joke (see above)
- he had to have a real coach brought in to teach him basic D,
- his man management sucks - despite being touted as a "great communicator" whatever that means
- his in game adaptations are not exactly stellar
- the team played much better as a team under Knoblauch, when Quinn was far, far away - whatever the PR/Spin dept. says
etc.
But yeah, I get it, Quinn has a career and dreams too. Maybe he wants to be the big gun behind Boston's bench one day. It's understandable. He is also a miserable fit for the NYR at this point in time.