The battery life is a bad joke, but surely it will have a play and charge kit, which should almost cure that problem.
For me, my couch is farther away from the TV than even 9+ feet X360 style controller cords, and the play n charge kit cord as well.
Mainly I just buy Best Buy store brand alkaline AA's in bulk on the cheap for my 360 wireless controllers, they last a good while, are cheap (something like $15 for a 48 pack that will last halfway to forever) and it works great. Of course that wont work for Wii U.
Not that I'm buying a Wii U but it would be an annoyance.