Nvidia should make a Chromebook not Shield.
The laptop form factor should be their go to device and not the console portable factor. It would actually be just as portable, considering the weird shape and form factor that The Shield has. They could probably even make the Chromebook thin and light to give attention to the average consumer. They already have an audience on the pc gaming side, why not continue milking it? The average consumer who buys a console isn't going to know what The Shield is. They're going to look at the controller and expect it to work with Xbox.
It sounds kinda insane, but it may just work with the partnerships Nvidia has built with Google and Steam.