I'm bumping this thread for another case I found. It's the
ARCUBE, a cube case that's available both in anodize aluminum finish and
all acrylic. But both versions have a smoke acrylic panel in the front, so you see the interior from the front instead of the side like in most cases. I quite like the hinges of the front panel, looks like what you'd see installed on cabinet doors.
A crazy watercooling loop showing the convenience of the slide-out motherboard tray:
It fits a mITX board and upright mITX card, to at least 200mm in length. Some packages include a Flex-ATX power supply (or maybe it's a short 1U), and there's also NAS configurations for multiple drives in lieu of using a tall CPU cooler. Another option is a VFD display for HTPC use.
Here's an unboxing thread on Chiphell showing the bare case, and then a complete build with the display.