Also, if you wouldn't mind my suggestions here about the structure of your thread tags, if your forum were mine, these are a few of the changes I'd make.
I'd probably move the "Class Mentor Discussion" either into the open (removing it's "Category"), or into the Class Discussion area. Having a single tag inside a category seems like unnecessary effort. I'd also make move all the Public thread tags into the open as well. Also, for the XForums, (don't know what they are) but they also violate the "1 tag in a category" rule, I'd move those into the public as well. My first inclination is also to modify the Guild-Only posts into the open as well, but I'd say that one works effectively either way.
Nothing important, just my suggestions on how I think your thread tags would be more efficiently utilized.
I'd like to see a feature added that would let me have categories of categories.
I've always been wanting to make 1 thread tag burried in about 20 categories with nothing else in them.