He had a slow start, but after the adjustment period he's been the best forward on WBS IMO. He'd have even better looking stats if the rest of the team weren't so offensively inept. Other Pens fans who are able to watch him on a more regular basis can help you out more in terms of weaknesses (I think the main ones are just getting a bit stronger on his skates, and just a little work on his skating, but it's not as glaring of a weakness as others may claim).
But his hockey IQ in the O-zone and hands are high-caliber already, and the Pens brass is very high on him, so I could see him get a couple cups of coffee should the opportunity arise this season (if there is one). Regardless, next year he's got a great shot to win a Top-6 spot in camp.