Well, I will weigh in on this, as I'm probably the most vocal advocate of NHL questions.
Remember this is an International game - meaning International interest levels. Yes, hockey is played in N.A. and Europe, so questions about general rules, elite players, and essential history are fair game. This is non-essential history, and even though I love the sport, even I would kick it to the Lexical/Uninteresting category - because while you and I know & care about the answer, the quiz is meant for everyone... And the VAST majority simply wouldn't give a damn in the slightest.
ok, then I guess I must appologize. Its just line between question being fine and too hard is not that obvious sometimes (at least for me).