(BTW, I have never owned any of the Xboxes)
I thought some of the TV stuff at least had potential.. Even if only to remove the need to switch/have inputs on the TV. In other words, have the other video source daisy-chain through the Xbox.
(I switch inputs on my TV all the time, so obviously know how to do it.. It does suck that nowadays it's much slower than switching inputs on analog TVs.. but really, I wish I could have all devices plugged in and essentially instantly switch between which one I am seeing by using it.. Yes, I know about HDMI CEC. That's not instant either.)