I've used old buildings as base for mine.
Only thing that remain the same is collision - I didn't bothered to change it - groung floor fit old collision, and proper roof collision is not necessary.
It's not only few tweaks to those buildings - like someone mentioned, but I've made new geometry and textures for almost all buildings.
I don't seem to have framerate drop with this building pack - but my computer is quite new and powerfull now.
I think that in old towns lots of polys were wasted - little stones on the roofs, some very small props, foliage behind town walls etc.
And really, I don't care if on some computers framerate will drop - I care only to make good looking buildings - and I've tried to optimize them, so I used polys reasonable way.
Zaro - I will make two other sets of buildings for rhodoks and vaegirs - and every set will have it's own textures - so now I'm using textures and buildings with prefix "swadia".
I don't like idea of having some random "artists" to change those buildings textures - as it took me lot of time to get those buildings done - so in "license" i will write that no one is allowed to change anything without my permission.
But as I trust your skills - I will be glad what you will do with these textures in GE

here you have example of road pieces
