meh... just a box with some edging...
though I like the idea of placing the HDD/SSD on the back of the motherboard tray... That is an area that is practically lost, so reusing it like that I welcome...
I know, it is limiting the height of the CPU cooler, but that is easy solvable by making the case wider with 10-15 mm; it will not change the looks dramatically (it is cube anyway) but will allow more standard sized CPU coolers (~160 mm)