Wow the pricing is a non starter but 200MH/W on a sASIC? I would have guessed a sASIC would be more like in the 60-80 MH/W range. That likely means a custom ASIC could be in the 500 MH/W range. 28nm could maybe break the 1 GH/W barrier. :The entire network using less power than giga farm is using right now. 
Yeah the NRE means it won't happen anytime soon but it is pretty nice to consider the future security of Bitcoin.
Higher capital cost and lower energy cost is better security for Bitcoin. The simple version is the attacker doesn't attack long and defender must defend forever so higher the ratio of capital:operating costs the better for the defender (FPGA, sASIC, ASIC). The lower the ratio of capital:operating costs the better it is for the attacker (CPU, GPU).
Yeah the NRE means it won't happen anytime soon but it is pretty nice to consider the future security of Bitcoin.Higher capital cost and lower energy cost is better security for Bitcoin. The simple version is the attacker doesn't attack long and defender must defend forever so higher the ratio of capital:operating costs the better for the defender (FPGA, sASIC, ASIC). The lower the ratio of capital:operating costs the better it is for the attacker (CPU, GPU).