Because he--I'm assuming you mean Tim and not Kerry--isn't.
We can give the position whatever title we want, but the person who reports to the owners and who makes the ultimate roster decisions is the person in charge. Right now, that title is "general manager" and the person is Jason Botterill. Putting someone between Botterill and the owners doesn't make Botterill better, it substitutes a different ultimate decision maker. And I'm fine with that substitution--believe me. I don't care what the title is. But recognize that there will be one "hockey person" running the team, no matter what called. Again, having two bosses equals having no boss.
Seems to me that the problem is that the decision maker isn't very good, and not that he doesn't have the right title.