Avid Whaler fan here who saw him numerous times. He just doesn't do any one thing good. This is all prior injury history, too.
The best comparison I could think of was basically Dan Cleary when he had his solid campaigns rolling with Zetterberg and Datsyuk. At the best, he does all the little things well, tenacious in a sense, decent speed and at best 15-20 goals.
That being said, anyone who saw him on a numerous times level would have seen he wasn't a first rounder. He was a product of a lot of playing time and a typical dominating junior player. He just didn't do anything one thing well, which IMO doesn't bode well for a future in the NHL.
Wilson had the size and shot
Hartman had the shot and tenacity/grit
Rakell was tenacious and smart
JT miller I ever thought would be as good as he has been. Was never impressed w/ him in Plymouth.