Although it sounds like a good idea, is there many people that would have the Wii so far from the TV that the standard Wii lead isn't long enough? It would be just more batteries to worry about! (Nice to see that they are using a 9 Volt battery though as if you buy the type you can get for wireless alarm systems, they can last for years).
Also I have such a mess behind my TV already, one thin lead doesn't make much difference
