Used game fee is the price of a full game.
Only need to online check once a day, but if that fails, your console locks up completely until next check period.
Requires Kinect to work. Of course, we all know what a rousing success Kinect was and how well it works.
XB1 includes TV and internet... but only if you buy an optional peripheral.
No backwards compatibility.
Zero plans to update old games to work on new hardware (unlike Sony, who will be converting old games to work via the cloud).
Also, Sony's stock climbed 15% during the XB1 conference.
Online check? WTF??