Now for the improvements: bump mapping and displacement mapping on the floor, and I pulled everything from Mikey's material setup except the basic texture and bump maps.  Turned all the lights down to 10%, turned off the IBL.  It's dark, it's dreary, it took 22 seconds.

(Problem, which I hadn't noticed before rendering, was he's glowing because his ambient is on.  That's why he's glowy still.)