Like I said last year when everyone was predicting he was a star in the making. He needs to be less fearful. He plays afraid and he shows when he plays a little harder he can compete but a consistent dedication to playing a tougher brand of hockey will hold him in good stead.
When I was watching him last year he looked like a fearless player. He was diving headfirst into pileups to try and poke pucks in and spent all kinds of time in the dirty areas. This year we are barely seeing any of that and he seems to be focusing on making really safe plays all the time. With a quick look at his stats, in his 9 games as a rookie he had 4 takeaways and 5 giveaways. In 18 games this year he has 5 takeaways and 4 giveaways. He's being extremely conservative both with and without the puck, which really isn't helping him or his linemates create any offense. I'm not super worried about his production, because I'm really not expecting much offense from Lindholm or Brown either, but he's playing very different hockey than he was last year. As you said, he will really need to get into the tough areas if he wants to create offense.
I've been disappointed in him this year, but I would like to see him get a chance with some better linemates/pp time later on this year. The skill and creativity is still there and it's nice that he's learning a responsible game, but we really do need to see more from him. I still think he's going to be a good player, he showed way too much last year for me to even think about writing him off. Hopefully when he gets his opportunity he runs with it like Kappy has.