It might be helpfull but I can see up front replies such "There is a General Developer Forum" ... so don't waste your time - it ain't going to happend anyway.
I'm afraid that RhinoBull is about right here... unless there is a 'significant' amount of posts on a regular basis for a subject area then we wont create a new forum for it (if we did, we'd have hundreds of sections already).
I haven't noticed a great deal of threads mentioning Design Patterns, but feel free to correct me on that, as I haven't been looking out for them.