Nintendos weakest console game library for a platform that relies on a gimmick (excluding the Virtual Boy), yet it's their best selling console, and sales after 4 years have plummeted. Falls very closely in line with the definition of fad.
I much prefer the Wii Us gimmick of being able to play my videogames anywhere in the house on that tablet as its practical, but I'm pretty sure it won't sell as much as the Wii.