So, what if this was all a mistake. The pad are not detachable. It's .. the screen that is, and it's optional.
What if the console is in the pads (it's not possible cause there are two.. but anyway let me have fun ok). What if the NX is a screen less portable, that can use.. your phone's screen... That way it gives you controls, Nintendo games, battery life, power, but people don't think they need two devices. It's a thing for their phone. BAM mic drop.
(That said it would potentially sell to way more people)