I honestly don't know if it dark enough or different enough to warrent adding it. Basic office map, with a few file cabinets in place to act as shields for a T to hide behind. Hostage area is well lit, others are a little dark. On my computer, the file cabinets also reflect funny, shiny.. maybe something is wrong with the set up?
Doors in a few places, like to paper room area - so that adds a little difference, but probably not enough.