I have a related copyright issue, if someone can comment on it. Namely, what if:

I download a model from SU's 3d warehouse I curate it, I verify for errors, I verify/put materials I prepare materials for a render process

Now, which one of the following scenarios would be safe, in your opinion:
(a) I reupload to my own models portal, no fees whatsoever
(b) I reupload to a separate collection on 3Dwarehouse
(c) I create a SU plugin for accessing from my own server (no from 3d warehouse), no fees whatsoever

Reading the TOS of 3d warehouse, tallbridgeguy's works are clearly legally covered by the derivative work clause.

Then I think some kind of a panorama software would be best. Here is an example of a Roman basilica I modelled:
http://www.septichora.hu/Bazilika.swf
You can navigate with your mouse and zoom in/out with the scroll wheel. There are no hotspots in this example but even they can be added with different "actions" like going to the next panorama, opening some info window or images etc.