Rather than a high-tech laptop, I would like to see a low-tech Atari/VC20/C64-style Pegasos Home Computer: internal keyboard, flat case, no fan, low price, and, recognizing that we are living in the 21 century, a cool TFT. With a lean and manageable OS, aggressively priced, this could be a winning package.
Right now, what computer can parents possibly buy for their kids? A dumb console or an over-sized over-complex PC, producing the noise level of a jet plane and drawing 350W. Programming these things is so complicated that you need a full bookshelf of developer material. Compare that to the simplicity of C64 BASIC: that's what got many kids hooked up and started in the 80s.
Since the demise of Commodore, the home computer market has been very much ignored (and I believe it's still there, if only there was a suitable computer).
