Thanks Ben. I've been playing with lighting, tweaked my materials a bit, and beveled/chamfer'd most of the corners. I also added a bit of volumetric fog.
I'm not sure what else I can do with the materials though. The bricks have a normal, bump, and displacement in it, it looks great up close but not so good at these angles. The metal cladding is a simple painted metal with a normal I created in Substance Designer, again, it looks great up close but not so goof from these shots.
I do like the lighting a lot better, but I don't have the nice reflections from my HDRI's.
Next on the list is to add some dirt using AO to maybe mask some of the shoddy materials.