okay well he's my little run down
(http://img41.imageshack.us/img41/3913/picture349.png)
This is the original scene, nicely imported to blender. The useful thing we can keep from this is the floor. the rest lacks detail and definition. (the big reason not to change the floor texture is because the mesh gets modified by summons etc i think, and overall its fine to leave flat.
(http://img31.imageshack.us/img31/1972/picture350.png)
This is a portion of the scene i remodeled (not textured yet). It hasnt been tested yet, but i imagine we can replace these things as we replace parts of battle models. if so then for the non ground/skybox elements, we model, uv, texture like normal, and let obesebear get it ingame :P
(http://img41.imageshack.us/img41/5981/picture351.png)
Another shot for your pleasure
(http://img43.imageshack.us/img43/4482/picture352.png)
For the ground texture, which is what the masses can easily jump into, as they are already made, just need to be rez'd up. For the above image, i took the original, and used the texture filter on different segments. for the green road i used the brick texture, (i think also made a vector of the base colors underneath) for the white sidewalk thing i use another brick texture, and for the dirt i used one of the others, something like sand. All these filters are done on a smoothed out color base.
(http://img52.imageshack.us/img52/1735/picture353.png)
For the touched up version (which i over did so it looks kinda washed out) i got hold of some grunge brushes, particularly splatter shapes, and scrapes/holes, and using largely white or black of different opacities, just spammed them everywehre :P