Creating something so unique in such a flooded market is no easy task and yet there were many examples last year. Lian Li's wall-mountable PC-O5S was practically a piece of art, being constructed from aluminum and a large tempered glass panel to show off the hardware inside.
The Core P5's flexible modular design allows for horizontal and vertical builds; Its open air design and broad liquid cooling support will give you a handle on heat, and it costs less than half the Lian Li PC-O7S
Liquid cooling seems necessary for the aesthetics alone and that's not cheap; Hard to reach the rear CPU cutout; Made of steel instead of aluminum with a plastic window instead of glass, but at least it's thick