It's tough. I'm not sure what I'd do here.
I wouldn't touch the Desharnais or Eller lines.
Why not remove Bourque? Because he's playing like a solid veteran. Even when he's not been scoring of late, he's been playing solid. He had a couple of outstanding shifts last night. Good at protecting the puck, keeping it deep, winning battles. Complements Gionta and Eller well in that he's good at bringing the puck to the net where Gionta can battle hard and Eller can come in from the high slot. And because he's playing like a solid veteran, it allows the coaching staff to rely on this line as a solid all-around line, giving the Plekanec line more room to push things offensively.
Here's the dilemma for me:
Galchenyuk with Plekanec and Vanek: on the one hand, I'd like to see this happen because Plekanec brings the speed and forechecking/tenacity/fundamentals, Vanek's demonstrated a great deal of creativity but Bournival's lack of offensive prowess has squandered much of that creativity. It'd be nice to see Galchenyuk complement Vanek, leaving the heavier lifting for Plekanec on that line. On the other hand, Plekanec is going to face off against Richards in all likelihood, and so his line needs to be strong defensively and gain a speed advantage, which he'd have with Bournival.
Galchenyuk with Briere and Weise: I like this because it pushes Montreal to have 4 lines that can score, with some defensive conscience on each line and some grit/tenacity on each line. That's nice. It doesn't maximize Galchenyuk, however, and Montreal may need to put his offensive talent to better use (along with Vanek's) in order to score. NYR has a much better D than BOS, and superior goaltending. So the team will need to throw more talent out there. Further, it's tough to bench Prust after two really solid games.