Figured out another lead on a more modern Enterprise:
http://deg3d.biz/splash_TOS.5_E/TOS.5_E.html
deg is a good guy, seen him around the VFX blogs I follow. I asked him if he would be willing to throw something together for us using his TOS.5 model. It's his vision of a post-TOS/pre-TMP Enterprise, self lit, very detailed. I really just want a better mockup to put on the Blueprints page.