Yeah but, here's the thing.
Those games suck
Motion controls and touch screens were around before the Wii and DS too. Not saying this will be as successful as those, just that the general idea being done before doesn't prevent success.
^ What he said.
This is pretty much a dream Nintendo console. I stopped playing it myself but can you imagine a full on HD Pokémon you can play on the TV and on the go? Talk about a system seller. The writing has been on the wall for a while now. Why else do you think Smash Bros. released on both Wii U and 3DS and all the other games that were put on both? Nintendo is evolving. Games on mobile, movies, theme parks, etc. Eventually it could reach the point where they don't need to rely on system sales to make or break them.