Very nice. That location has great textures and light!
I think I like 1 and 3 the most too. If you still have access to that place it seems like you could do some great night stuff or staged shots.
One thing to try for the other ones that people don't like quite as much is to change the perspective a bit. These all seem to be shot standing height. The picture of the bomb graffiti could be more interesting, I think, if shot wide open (at 18mm) and with the camera on the ground looking up. It would have the effect of them standing over you and glaring down and may have a more emotional effect. Something to try anyway!
I often remind myself in a place like that to focus on the interesting textures of the paint peeling and whatnot. Sometimes a tight shot can provide interesting colors and textures to play with and have some fun shots. One from this week I took on a lark that I kinda like:
I'd love to see the next batch.