How about this, stop "inventing" rehashed ideas over and over and over...
Instead smaller companies should invest in battery R&D. With that, we could truly get a small, relatively powerful pocket pc. I'd love an pocket sized xp rig with decent memory, gpu, running around 2+ ghz. Imagine running REAL apps, games, streaming content on something this size (and then laughing at everyone using a netbook...)
The phone w/ real OS idea is just terrible. Its been said already, but there would be too many issues when all you want to do is make a call ("sorry, my phone just got a BSOD").