Improve the side parts of the acrylic case for coolers

[fernslayer]

The Parallella has a mandatory requirement for an active cooler, but the acrylic case that comes with it does not reflect this in any way. Some people just put a small fan on the side parts of the case, but most of the fan is covered. I took a file and a drill and made two holes and a semi-circular opening for a 30mm fan to be attached and to unfold more flow. All this is sub-optimal because the fan can only be mounted one-sided with two screws. Why don't you replace the single long slit on the side with two bigger squares left and right and a circular opening with 4 mounting holes in the middle. Maybe one side element with support for a 30mm cooler and the second part for a 25mm cooler?