One mystery that I'm not sure will ever be completely cleared up is exactly how much input Crosby really has re: his linemates.
It seems clear at this point that there are preferences sure but like... do we REALLY think Crosby would throw a fit if GMR worked? It would help his team win, right? Malkin has taken assignments before for the betterment of the team and seemed happy enough to do it. I really don't know that Crosby is this like... domineering force when it comes to his linemates. I think it's just unimaginative, lazy, somewhat spineless coaching.
There is also the very real consideration to make that Malkin seems much easier to adjust to his linemates while Crosby seems to require guys of a much more certain mold. It's a factor but even then... I dunno. I have a hard time believing Crosby would suck with linemates like Zucker and Kap or Carter or whoever, ya know? He's Sid f***ing Crosby.
Sid has worked with everyone from Sheary to Hornqvist. He can play with anyone. He just doesn't
like to play with everyone. Whether he has explicitly told that to Sully, hinted at it, or just by his body language (for example, Crosby and Hornqvist yelling at each other because Horny didn't get him the puck
), I'm sure Sully knows who he likes to play with. Either consciously or subconsciously, I think Sully is trying to keep Sid happy. If he makes a change and they still lose, he risks losing Sid. You lose Sid, you lose the team. You lose the team, you lose your job. But Sully, if you're out there, you'd find another job instantly. Just go for it.
The part I still can't wrap my head around is that he didn't even make any changes down 4-0 with 10min left.