True about that stand alone nature, and I think they like to argue it let's you play mouse based games (which is true but I still like a mouse, haha).

I think a pocket version would be to at least rework it. How it does that, I'm not sure, though... PS Vita had a weird touch screen back plate, but that kind of sucked. Maybe a touch pad along the sides? Idk. But of joystick, dpad and touch pad, I think the former two win for gaming on average.