Just work on the Xbox before it runs into the ground with lack of exclusives. MS is trying to juggle Windows, Phones, Kinect, PC gaming and Xbox.
Drop the Phones: iPhone and Andriod beat you to the punch years ago.
Drop the Casual: Kinect is great for adding a new audience but 8 year olds like guns and muscles not WiiMote knock offs.
Drop the PC gaming: Your trying to make up lost ground and by doing this your leaving your star player, Xbox, behind.
If they stop all those then I think the Xbox will solider on and fight a good fight in this console wars.
Also the Xbox needs Japan, Sony is making ground because of the Rising Sun country.