The DS had some practical design issues, like the screen and being top heavy. The PSP had some issues they were incrementally working on. The PS3 was expensive. Thus they had reasons for redesigning. For Wii, the system itself is not an issue.
A flashy-first game is awesome when it comes out. A great-first game is awesome forever.
Plus, just for the hell of it: Kelly Brook at the 2008 BAFTAs








