I'd really love to see a thin e-ink screen that you could place in front of a regular laptop screen. That way you wouldn't even have to switch devices you could just grab your regular laptop and go work outside in the sun for a few hours.
So kind of the way ink on paper adds black to make CMYK, the screen would add black to make RGBK? That would be awesome! I wonder how hard it would be to line up two independent displays? They'd need to be pixel perfect.
