Can't imagine the kids doing anything new
First I'll say this is a wonderful thing - a few years ago I realised that so many computer parts just hooked up via USB that the actual computer itself could be tiny, just plug in the bits you need. And here it is.
But I can't imagine what this provides that can't already be done with existing computers. Most parents can afford to buy their kids a cheap lappy, and programming languages are available, so what's new? Just the fact that it's so much cheaper, you might get one for your kid to muck around on, put some educational games on it, before you trust them with a full-fat laptop?
I suspect the main allure is people wanting cheap media players, or other uses. If I could load up my son's favourite movies (Cars, etc) on a USB stick and plug one into his telly, that would keep him happy now that his cheapo DVD player has seized up.
Back in the 80s games were unsophisticated 2D character based affairs, and we really could write games ourselves that weren't too far off the commercial fare. Good luck getting kids motivated to write a 3D FPS blast-fest on ANY device, let alone this one. I think you'd have more luck setting up a well supported Open Source community around an Android games kit for the kids' mobile phones. Mobile is where it's at, they are all glued to their phones and tablets these days.
10/10 for trying, and I'm sure it will be a success in many ways, but not so much for the educational angle intended.