@wkempf: I think the device is not out there because nobody knows exactly what they want!
The Ubuntu Phone has an interesting concept in being a phone/computer that plugs into various cradles to make it into a tablet, computer, TV or whatever but it is still using a phone form factor (it should even be able to make calls! imagine that!?!). It's just another take on trying to be everything people want.
I'm not so picky, if its free!