I'd disagree that 240mm AIO is overkill. Mainstream systems need some half-decent cooling too. I'd argue that a 240mm water unit is becoming the standard size AIO given that the current AMD FX chips are hot as hell and Haswell will melt itself if pushed too far. A double-thick 120mm rad won't fit anywhere, so the gorgeous aesthetics severly limit you to a substandard single-thick 120mm AIO or a paltry air cooler that can't cool anything.
Ultimately you're not getting a particularly powerful system into this case. Top-end SLI/Crossfire graphics cards may be OK because you do get 2 120mm intakes on the front, but you can't then feed the GPU array with a decent enough processor because it'll be tricky to cool.
Look forward to a version 2 of this. Hell, make an ITX version with enough room for the 240mm rad up top and you'll be onto a winner.