zebra_in_dream, I'm sure you're right that there will be situations in which fans disagree about which categories to use and not use. I'll echo anon here: in a case like this, a conversation would unfold on the Talk page where fans could argue in favor of whichever solution seemed right to them. And hopefully a consensus could be reached.

What the wiki committee doesn't want to do is dictate how fans self-identify. It's important to us that fans be able to choose the labels and categories that they want. And yeah, sometimes fans are going to disagree with each other. So we'll turn to the Talk page and let the fans in question talk it out.

It's not a perfect system, but the wiki committee would prefer the flaws of a system in which the decisions are up to fans (even if fans sometimes disagree) than the flaws of a system in which decisions are up to the wiki committee. :-) (I mean, we're fans too! but we're not fans of everything, and we're not experts on everything, by a long shot.)