I'm starting tag a lot of stuff like the following video lately. I'm real interested in the digital sandbox that video games are becoming. More and more your seeing games inviting prosuming, including advanced, yet accessible, level editors. Game companies are encouraging users to make modifications, and services such as X-Box live are making it easy to exchange stuff online. Now, it seems, we're on the verge of homemade controllers?
The Wiimote is not obsolete. Its still quite cool. But I'm really beginning to wonder if any of these user modifications will go mainstream. I could see a SimCity / Starcraft type of game built around the hand interface (nevermind if you could create a glove for a baseball game or Manhunt 3: Choker's Delight).