I still think Kassian has a good future, and the ability to be an important offensive contributor. One thing he has is the ability to create chances with his stick handling and ability to beat guys one on one. We haven't quite seen it too often at the NHL level since his finish is questionable, but in the AHL, and the odd time in the NHL we've seen it.
Zack hasn't really found out what player he can be yet, partly because he never really had a clear role on the team. He wasn't particularly effective in any role, and perhaps his best games were the limited games he saw with Booth and Lapierre. He wasn't good as a 4th line, energy type, as he went looking for hits unnecessarily, and wasn't quite fast enough to get there and taking dump penalties whenever he landed one. In a scoring role, he was inconsistent, and didn't really find chemistry on any line, and he doesn't have the conditioning to play important checking line kind of minutes.
I think the coaching staff and management will really have to help him along to find a role for him on the team. I think offensively, he's better with the puck then without it as in I don't see him as just a banger and crasher or just standing in front of the net. He isn't quite fast enough to generate offence on the rush, but he has the hands and size to do it off the cycle. If he can complement a line doing this, he can blossom.