honestly don't see much change in his skating. maybe slightly better burst, but really think he's just playing faster and more confident.
just as an example...i believe it was 2 years ago there was a play gauthier got by a dman at the point and took off and laf came flying down at the same pace to create a 2 on 1 that he finished off. and it was not gauthier throttling down that allowed the play to happen. if you go back to the playoffs 2 years ago you saw some pretty similar skating ability flash a lot as well carrying pucks through the nz and setting up offense on the rush. the ability has been there, though he has continued to incrementally improve his skating...but really other than his first year where he was really struggling it hasn't been a big issue. i do think he's improved his conditioning though this year, definitely a substantial difference in how much gas he has in the tank per shift.
wouldn't say it's his skating ability, just think having a system that creates controlled breakouts, rather than rimming pucks up the boards to a wing standing still on the wall, is getting him pucks in a much better position to do something with it. that, playing with panarin who sees the game very similar, and the confidence that's continuing to build from having success is also leading to him playing at a higher pace and keeping his feet moving. in my view it's part system, part environment, part confidence all coming together and it's made him much more noticeable.