Vista and 7 just feel... Incomplete. It's like Microsoft decided to make some sequels just to cash in on it, rather than actually taking their time and making something satisfying. The fact that I can't find a single anti-virus that doesn't completely shut down my ability to browse the internet (On 7) doesn't help, either.
My top-end games run just fine on my XP computer at full graphics (With anti-aliasing and everything), so I don't see the point. I just think that abandoning a solid OS for a few perks that I don't really need and a whole bunch of headaches I don't really want seems shallow and stupid to me. I've always thought that pushing DX beyond XP's capabilities was just an excuse to get people to "upgrade" to Vista or 7 because people were sticking with XP. It's frustrating. I know I'll probably switch eventually, but at the moment it doesn't seem worth it.
I'm not trying to turn away from the original discussion, though - Let's just mark that one point against the Devs/Publishers if they don't do something about it. If they decide not to, I guess I've got plenty of time before the game comes out for Microsoft to polish 7 up a little more.