I think this would be cool to see as well. It could be pretty simple, just a few different sizes of basic mountain mesh, maybe an animated door to cap it. It's a 5 minute SC3 job.
Something similar to:
[ame="http://www.orbithangar.com/searchid.php?ID=4370"]Hidden Base 1.1[/ame]
It would have to be small, as I use a 2GB flash drive to transport Orbiter from computer to computer, and I am nearing capacity. Short of faking its failure, I don't think that I can get a new one without raising eyebrows.
Thanks. Aside from a slight guidance problem, launch was great. Reentry, though, was interesting. The RV shakes uncontrollably unless you are at .1x time...