I think the most important thing, if you want a tablet to be productive, is a keyboard that actually suits it. I'm not talking about what we have now, which is

I think the most important thing, if you want a tablet to be productive, is a keyboard that actually suits it. I'm not talking about what we have now, which is basically laptops with detachable keyboards. I envision something you could pick up and type with, like a split keyboard on each side of the tablet. The tricky part to this is creating something you can grip and type with at the same time, but I don't doubt a creative engineer could come up with something (there are one handed keyboards that you can grip and type with effectively, IIRC).