The vaguely-cube-shaped open-air case is in no way a new concept. Just off the top of my head, there's the DangerDen torture rack. Not to mention every 15-year-old hardware enthusiast who can't afford a real case and has to build one out of lego/wood/cardboard/k'nex.
What would actually be interesting would be a standard vertical tower case, built without the need or even the capacity for side panels. Just an open-air midtower case that actually looks good. And don't tell me to take off my side panels, because that's not the point here.