Personally, I'd love to see such a thing. It would be great not having to travel with both a laptop and a phone. It would also be great to have your phone function as your computer and to be able to use that computer with any display, keyboard and mouse that happen to be nearby. However -- there is that question of form factor. No one wants to do serious work on a tiny phone display, so especially in travel situations you would need to take a proper display, keyboard and mouse -- in other words, a laptop. Someone else already hinted at a laptop "shell" form factor that would just function as a dock for smartphone. But really what company would want to sell the shell when they could just as easily sell a full fledged laptop? And wouldn't traveling with the shell defeat the purpose of traveling light and "discarding" the laptop?