I gues this is rather low on the technical mods, but its probably going to be the most useful. I just drilled 35 holes into the front panel of my InWin Q500N. They look orderly enough, except for the first one I made before measuring.
My next mod is going to be cutting a hole into the side panel, and mounting a large fan. My Tbird 1.3 is running 50C, even with a Noise Control Silverado @ 3000 RPM.
I want to paint the case too, but I'm not sure how or what color. I'd like to camo one of these cases.