There's still plenty of room for him to improve into a full time 4th liner in the NHL. And I think it starts and ends with his edgework.
That is really my only knock on him.
Thinking he will be anything more than a 4th line player is putting way too much on his shoulders. That said, if he can get his feet under himself? Stop falling, skating to the puck or where it's headed, not past it or where it was. He clearly thinks the game well enough. He has better offensive instincts and tools than most enforcers. He's more than adequate with speed.
Learn control and timing at NHL SPEED, and he's gonna have a worthwhile NHL career.
It's a small tweak to make, but for his role and the competition for a spot, it's the difference between leagues and or the stands.
He's gotta be reliable for 10 minutes a night and not get smoked by another teams top 6 when it's shut-down time.