There's too many discussions going on at once so I will put this here.
I was watching the video NWR did last night, they made many good points but I am not convinced there has to be a successor to the 3DS, I am pretty sure this is it.
A couple of things I realized. If this is going to work it has to be ONE machine with a single library. If all it turns out to be is just Wii U 2.0 then it's already DOA, nobody wants another Wii U. If that is their plan then it means the only lesson they learned from Wii U was the bad name and lack of focus, that wasn't the only lesson they needed to learn.
They confirmed the guts are in the tablet, which means they can sell those separately for kids who want just the Switch. It does look slightly larger than a 3DS XL but it doesn't look any larger than a typical iPad mini which parents do buy for their kids as gaming machines. For that to work it needs at the very minimum the media Apps, Netflix, Hulu, Amazon, and maybe a couple music apps like Pandora and/or Spotify, or even Amazon Music, whatever. It needs a functional web browser that supports flash and that is about it for apps, the games sell themselves.
BUT if there is a separate machine, a 3DS Switch or something that has its own library or target price to kids, then this is worthless it defeats the whole purpose. Because in order to entice them to buy that machine over this they once again need to make exclusive games for that machine.
It needs to be ONE machine you buy. There should be a bundle that includes the dock for the console gamers and a separate bundle Tablet only for the portable market. It looks like that is technically doable since that is what they showed off. OR at the least they could release a Switch Mini ala 2DS for kids, it plays the exact same games, but is smaller form factor with the buttons built in for the kiddos. If its an entirely separate machine with its own library of games this thing is useless outside just another Nintendo console that will have a big splash at launch and fade into obscurity as time goes on.