Beaglebone Black with CRAMPS cape case

This is my take on a case for the Beaglebone Black single board computer when it is outfitted with a CRAMPS cape. I have one of these setups on my delta printer and will soon have one on my Mostly Printed CNC machine (http://www.thingiverse.com/thing:724999) build. I have designed the so that it can be fitted with a standard 80mm brushless DC fan. The U shaped hole on one end is to route wiring through. I am also uploading the Freecad files for easy modding. Pointers on how I can improve my gawd