It's hard to say, conceptually I liked the idea, although it felt a little convoluted. In execution it's quite convoluted and overpriced, especially with accessories and paid online. I mean essentially the idea was a shot at a Wii U 2.0 but now it feels like that for the wrong reasons as well.
That said, if they don't faceplant and try to wash it away somehow and actually live up to their supposed ideas, it'll have the strength of both handheld and console Nintendo games on it, including Pokemon, so that alone would make it do at least passably.