Sorry, but I will always prefer PC gaming over to Xbox. A real good rumor to be informed of which I thank you for. But personally I am not digging the tablet style of the new OS, and to be honest, adding 360 game support won't really change the fact that this may turn into a disaster. People may disagree with me, but I don't see the point of using a PC to play 360 games when I already own an Xbox. Thanks though.
As well, emulation though, I would find rather pointless. You would need a mighty powerful computer in order to emulate it 100%. It's an interesting idea no doubt, but I'm skeptical of Windows 8.