This is looking awesome Scott, can I ask how you achieved the broken tiles/dust effect on the floor (2nd and 3rd pics highlight this)? It's a neat effect :)
I would also like to see actual vegetation in the scene even if this town happens to be next to a mountainside... Btw what's with the green crack on the corner of the 2nd pic?
Infernal Engine had an awesome unwrap feature for Lightmapping. Literally a checkbox that has to be checked and the engine does the rest. No need to setup for a 2nd uv channel and unwrap.