That won't happen as long as Steve Jobs is alive and probably not after he is dead either.
One of the reasons the Mac experience is as good as it is is because Apple knows exactly what hardware their software is running on.
S-
I couldn't disagree more. Windows 7 has superb driver support - I'd argue it's on par with the Snow Leopard drivers, except without the wireless dropout crap.
Back to what OS X is missing...
Easy to use key-commands. If I want to select a dock icon without using my mouse, it's a 3 button combo just to get the dock selected on my MBP.
Tree view in Finder
Smaller default icons
The ability to not have certain drives auto-mount
Better sync capability
Less Beachballing
Better iSync support
Better multi-monitor support
Per-application sound settings (see Windows Vista)
a better notification system, like growl
File cut
Folder merge
Better flash support
Old Expose and dock
Theme support
Resolution independence
Default font customization
New minimize to dock animations