It looks like the floor texture of the background outside of the map haven't been changed to the brownish mud floor of the map. That's really ruining the environment contrast, so is there a possibility to change that?
I also have a suggestion regarding smoke. Would you be able to make the smoke from explosions stay for a longer period of time, and then gradually, slowly dissolve? I believe that with the reduced smoke checked it would not cause serious lag problems anyway, however it will give the people under heavy fire an advantage of being somewhat hidden in the smoke which is also realistic.