The thing is... that's what everyone said about the WiiFit Board, the Wiimote, and the DS. Every time Nintendo comes out with some new crazy controller or add-on, people say it's going to fail, but it then goes on to sell very well.
I'm not saying Nintendo can do no wrong (oh, they have... they have), nor that everything they come out with these days is solid gold. But nothing can really say how it will be received. It could easily go either way.
On topic: The new PokéGear features are up, and the Map looks... kind of... bad? Almost rounded off and kind of a caricature of the usual map style.