Problem is his consistency. He can a score many goals in few games and then completely be invisible for another handful.
There have been plenty of guys with an even greater sample size of a season that have never produced again. The most recent coming to mind being Grabner
You could see a change in his game though. Less playing on the perimeter, and more of a willingness to go to the net. Despite the slow start though, he paced for 18 goals last year playing 13.5 min a game. I don't know if he's actually going to be a long term top 6 solution, but if he gets more minutes from the start, he could score 20 without much improvement really.