Ok, here's the thing Niveus is working on (and which I've been playing with for a bit). A few things:
(1) There are already new tools that integrate Apple's Airplay into Media Center. Purpose? You can start a title on say, your ipad or iphone, pause it.. then transfer it to your media center so it comes out on your screen. I've been playing with this and frankly, so far it's still got some work to go, but it is pretty damn cool when it works as designed. Very slick results.
(2) In the end, your ipad or other device becomes a fully functional touch remote that puts even the Harmony's etc. to shame.. you can see video output thumbnailed on your pad device along with all the stats from it. Watching something on your main screen but someone else wants the living room? Fine, have your media center change tracks; shoot the video stream from media center to your pad, leave the room and people can watch whatever they want on the main screen, just with a gesture or a click.
(3) Integrating social media with your videos, etc. so you can "tweet" or "facebook" while you watch something live on screen with a a10' interface (I personally find this stupid, but Google TV also worked to do this)
And a few other features I really can't (at least right now) discuss. But kind of what the next generation will be.