This is interesting as a test to see how well SD will create interfaces, and I think it was worth the effort, but I also see it as an unsuccessful test. For example, I can't get anything useful for even basic stuff like a user profile, image gallery, product information page, or just a video. 

I think a good next step would be training for just one narrow page type, such as said user profile. If that works, then keep going for additional page types, ui elements and such.