The nice thing about the Waymarking.com site, relating to virtuals, is if you want to come up with the category and post it through the peer review process, you can! Just build a group around the idea, define it, and put it through the peer review.
Mr T's Wow category has not yet gone through the category creation process because they can't figure out how to define Wow. Maybe you can come up with a good definition. Although I have to warn you - the entire volunteer reviewer group couldn't come up with a good definition for it. That's kind of the point.
I took your suggestion and joined the group. I sent a message to the group leader with my definition and alternative names.