My vote goes to Trevor Zegras after seeing his goal from last night. He was underperforming at the beginning of the year and then got injured, but with all this time to sit and think during his injury, I think he's gonna tear it up.
For my own team, I'm picking Will Cuylle. Guy's got a scrappiness and scoring ability in him that remind me a little of Tom Wilson, but slightly smaller. Drafted as a 3C, but his ceiling might see him as 1RW next to Kreids and Mika.
Other than the Rangers, I think Moritz Seider breaks out and discovers his offensive game in a big way.