I don't want to seem like I'm shooting down ideas, but when SP went to subforums, the result were forums that were barely traveled and so many threads had 0 replies. It might be doing better now, I don't know, don't go there anymore *yick*
The good thing about WHT is that it is general enough to attract a wide variety of people. The bad thing is that often, some forums are not specific enough to really cater to the member's needs. At the moment, all forums seem pretty well visited, which is good.
I've asked Matt about opening another forum that I pictured would handle just the specifics, though we never got that discussion going. Unfortunately, most of what I pictured has been suggested lately and while that makes me think you'd all like a second forum, I don't know if Matt would want to implement some of it here, and unlike some of the web hosting forums, none of forums here would have overlapped (I don't see a point in putting up a second WHT and the forums would actually be based on a sitemap of a directory site I have).
*bangs head on desk*
Anywhoo.. I'll still try getting in touch and seeing if some way, we can cater to some of these requests, either here or there, somehow.