Something I'm more interrested in though is controller battery life & price. It certainly doesn't look like your average 50 dollar controller (even if in reality it probably doesnt even take 10 bucks to build a normal controller)
I would think it's at least $50+
And I would guess that each system comes with one WiiU controller and maybe another wiimote+nunchuk or a classic controller. That way you can "share the tv" or whatever and have the opportunity to play special games tailored to the controller. I'm guessing only a few games will have the option for using multiple WiiU controllers.
There's a ton of possibilities with using the WiiU controller especially for like sports games and puzzle games but they probably would only need one player to be using it. Plus of course a lot of Nintendo's bread and butter is singleplayer games like Zelda and Mario.