I just feel that some of the features, if not all of them, could have been incorporated into Xbox Live in more of a slick fashion that makes them more readily and easily available. I'd like twitter to run in the background as well as the Zune marketplace. I'm relatively sure that Microsoft is saving this for another update, however, it's hard not to feel as if the pieces which connect these new features to the service (as a whole) are strangely missing.