I think the exposure is pretty good; I couldn't read the sign on my monitor at home but I can on the one at work. I can see where you wanted to include it, but maybe a shot just beyond the sign? To me it kind of breaks up the flow of the building.
love the dark ominous and just about eerie, horror movie feel i get from this image ... fully expect dracula or some living dead person to jump right out of the monitor!!!!! .. arghhhhhhhhhh !!