Edit: Problem solved. As Mark Trapp points out, normal users can no longer mark CW.
The consensus seems to be that community wiki is useless here, and we've been pointing this out in various question comment threads. The problem is that new user keep coming in with the old expectations of how CW should work, and marking their questions CW just because they're subjective. I see a few options for dealing with this that I'll post in separate answers- of course, post your own if you can think of a better solution.
If we get a clear consensus, the mods, in their capacity of liaisons, can take it to SOIS.