Thanks for the compliment!
I had the idea of creating a workshop multiple times already, but sometimes there are other stuffs to do etc, I'm afraid I might not be able to cope with all the requests. :/ Which is why I mostly just volunteers, or maybe do a handful of requests sent to me via PM & VM.
One other reason would be some of the ones that made the requests don't really appreciate the works. I've encounter some that made a request, then used the sig for merely less than a week, then they would like to make another new request or abandon their project. :/ That really disappoints me. So by volunteering, I do evaluate potential projects that are credible and make sigs for them for their constant efforts.
As for the UI thread, it was a simple request indeed. Wasn't sure why I suddenly had that idea of gathering all the UIs. D: I am glad that it proves to be very useful till now.
edit: sorry for the wall of texts.