Cell phone companies have been showing projectors since 2009 so that's an easy feature to add to a tablet, of course the immediate challenge is battery life with such a feature. I'm on my keyboard constantly and therefore am not attracted to a tablet even with a portable keyboard because then it's a 'wanna-be' laptop.
One of the limitations of a tablet as I see it, is its limited screen size.
If someone can develop a tablet which is like a miniature hand held projector then the image can be focused on any size viewable screen, wall or paper and that will increase its application areas many fold
Replay available now: A handful of emerging network technologies are competing to be the preferred wide-area connection for the Internet of Things. All claim lower costs and power use than cellular but none have wide deployment yet. Listen in as proponents of leading contenders make their case to be the metro or national IoT network of the future. Rick Merritt, EE Times Silicon Valley Bureau Chief, moderators this discussion. Join in and ask his guests questions.