From what I've read the Xbone is missing (or omitted) key features the 360 had! It really does seem like it was rushed out to not give the PS4 a head start.
http://www.eurogamer.net/articles/2013-12-03-frustrated-xbox-one-players-suggest-missing-system-features
Top Xbox One feature requests
Xbox Guide functionality to return
Friends as a tab on the home screen
Notifications when friends come online, you receive a friend request
Hard drive management screen
USB support for storage/media
View (and easily rate) recent players
Smarter Kinect phrases ('Play Forza', with disambiguation for duplicates)
Party chat to be simplified, on by default in parties
Set game chat to TV, headset (or both)
Controller battery indicator
System-wide controller options (rumble off, layout save)
Avatar store
Voice messages
Background music
Custom backgrounds
Ability to see Xbox One games/achievements on Xbox 360
