I have always wanted to make this model. I have seen it made and greebled to the max. It is an excellent model. I imagine if you looks at the pics of the Moebius (SP?) models, you could easily make an interior. The first two pics below is from a guy who makes decals for the Moebius model which is plastic on the outside, but PAPER on the inside!! Paper shall rule one day!
just grabbed it off an image search a few days ago, don't know much more about it. I always wanted to build that diorama though, about a million more scene dios too!