According to some around here, not you, the problem is that Quinn doesn't let guys "do what they do." And I firmly disagree that we don't have a plan with the puck. The intended offensive zone plan is pretty damn clear when the guys are executing it.
I think the kids are creative, but I don't think either has fully figured out where to be and where to go in a way that's instinctual. I don't mean natural instinct, I mean trained instinct. If you're not going to the right place with the puck (either carrying or passing) and you're not going to the right place without the puck, then the amount of creativity you'll ever be able to show is pretty low. I'm really not sure what a different structure would do to bring that out of them. The only thing that can do it is experience.
There was a moment in the game today where Lafrenière popped the puck into the corner from the half wall, Chytil corralled it, but there were two Bruins there. Lafrenière paused, and then all of the sudden was like "oh! Maybe I should go help out!" By the time he got there, it was too late and the puck was going the other way. Chytil did a lot of the same thing 2 years ago. He did less of the same thing last year. He rarely does that anymore this year, because following up on the play like that has become instinctual. Kakko did a lot of the same thing last year and is doing less of it this year. He still takes too long to shoot the puck sometimes, for example, but he's still shooting it more quickly and with more on it than he was last year.
90% of the problems I see with these guys is timing related. Again, I'm not sure there's anything that can improve that besides experience.