I don't know if you guys heard of this project, but it's quite interesting:
http://www.romereborn.virginia.edu/index.php

Yes, it does look interesting. Some of the associated links don't lead to much, though. I guess it will all take time to come together.

They said they only had ~22 models completed...of a target 200-300 actual, accurate historical buildings. And then the few thousand or so generic houses on the outskirts.

Looks like we will have to wait awhile. But it definitely looks cool.