Dude, I've used every version of windows released. They all suck. Used linux too. It's not ready for the majors.
The only justification for windows would be the apps that are compatable. On it's own merit, it sucks and spits it back in the users face.
The features that I was speaking of were basically features that already exist anyway on other OS'es. But it's good to see microsoft trying to do some kind of innovation.
Plus, isn't XP basically just NT with crap added to it?