For me the Kassian for Hodgson trade will always go down as a horrible trade for the Canucks, even if Kassian somehow becomes a good player.
The Canucks made this deal when they were taking a run at the Stanley Cup. They were leading the league in points had a serious chance of going all the way again? So what do they do? They traded one of their most consistent forwards that season for an unknown commodity. A guy who was, at the time, playing in the AHL. How does that help the Canucks' cause? It doesn't. Not one bit. It was a boneheaded move.
I don't care if Hodgson wanted out. Gillis should have A) gotten someone back for him who could have an immediate impact, or B ) waited until the offseason to pull the trigger on a deal like this.
Even if Hodgson was asking for a trade I'm sure he could have been talked into staying for the rest of the year, especially since the Canucks were a top contender.
Anyways, to answer the original question: no, it's not too early to call Kassian a disappointment. I think by this time we were all hoping he'd at least a legit 2nd/3rd line winger. Is he a total bust yet? No, there's still time for him to break out. But like I said above, even if he does that doesn't make this a good trade.