Unfortunately, this set lacks other major texture maps to give it depth and detail.  Everything needs to be faked to make it presentable.  I agree with Ghostship2, the lighting is too stark for this type of room.  I don't remember if lights were included, they would have defined the atmosphere in the surrounding space.  My inclination would be to generate new specular and bump/normal maps.  Maybe use an area light as the primary source of illumination.