Nintendo has enough 1st party A to AAA titles to keep the Wii going through the middle of next year. That is one year from when developers realized they needed to jump on the bandwagon and gives them plenty of time to develop new titles.
That said, it would be great if Nintendo developed an Unreal-like engine that pushed the Wii graphics to the absolute limits and licensed it to anyone that wanted to develop games. That would get the third party apps coming...
I do believe that the Wii is going to need to branch out a little to be long term successful and from that I mean not every title will work with the Wiimote. Some will better fare with a traditional analog control and they need to embrace that mentality so that everything isn't forced into wii-motion so to speak.








