Nintendo has been recycling Mario, Zelda and Metroid for 20 years. They didn't risk a holiday season on a UGC game until 2008.
So while Nintendo has a problem in that they have not created new character-centric games on the level of Mario or Zelda in a long, long time, and possibly have an additional problem that they are now about 2 years out from creating a successful new mega-franchise (like Brain Age, Nintendogs, Wii Sports or Wii Fit, which launched in Japan for Xmas 07), the idea that Nintendo is continuing on the path laid out by Wii Music and Animal Crossing Wii doesn't have much support, as far as I can see.
The big Nintendo games showing their strategy now are Sports Resort, Fit Plus, NSMBW, Galaxy 2, Zelda Wii, Vitality Sensor, Zelda Spirit Tracks, Pokemon HG/SS, Mario and Sonic 2, etc. Side projects and experiments are Flipnote Studio, Mario and DK, and Art Style series.
"[Our former customers] are unable to find software which they WANT to play."
"The way to solve this problem lies in how to communicate what kind of games [they CAN play]."
Satoru Iwata, Nintendo President. Only slightly paraphrased.
