[Fury]

I wonder if anyone has cooked up a tool which can check for unused files in maps folder?

[Nuke]

this should be a debug build feature, if its not already

[FUBAR-BDHR]

Well unless debug loads all models to get the texture names it won't produce a list.  You also have other things in the maps directory like skyboxes and alternate textures.  Only real way to do it is to manually clean it up. 

[Nuke]

its just a matter of using good naming conventions really. like use the same name for textures that you do for models, or include what kinda og grafics they are, like trail or blob in the name, usually also with the name of the weapon.