Shrug, if you like(d) the game you've played it to death already. If their (MS) flagship game for Vista happens to be Halo 2, and older game, too bad for them. They should have put Perfect Dark Zero on Vista with a patch that unlocks Jumping and the 'Fun' button.
All an all, from a consolers point of view this isn't all that interesting.
p.s. - Im sure a few of us here don't even feel like testing out vista until at least SP1
