MS wants to close everything back up, I think the PC is too far gone to have people rail-roaded like that, so I'm not going to fear that, yet.
As for Win7 and Win 8, other than Metro and current drivers, there seems to be some additional nice advances in Win 8 over Win 7.
Will there be a hack to get us back to a desktop? Will companies like Stardock be able to over-ride Metro and give us a more standard/mac type interface?
When the drivers mature and there is a way around Metro, I'm seeing a better OS. That said Win 7 is solid, if it were released when XP was and there were better virus updates back then, MS would have been in a superior position today. They lost a lot of people to Apple.