I agree with other commenters. Too big, far too expensive for what it offers. The whole point of mITX is to go small. Minimalism. You don't plan to use two GPUs? Then might as well build a smaller computer and waste less space, generate less noise, makes it easier to transport or disassemble if needed too. Big mITX cases defeat those purposes to an extent.
Antec, I wish you'd just make a modern mITX Skeleton case. Now that would get me excited.