Dual Gamepad Support on Wii U?

So Nintendo mentioned Wii U would support 2 Gamepads quite some time ago (I believe it was in 2012, before the console released) and this feature hasn't yet been used. What do you think about it?

I have no idea why Nintendo even adds these features if they wind up going unused. At this point it really doesn't seem like it will ever be used in future Wii U games. However, I'd like to see some games use it in the future, it could add some more possibilities to Wii U games. Just as long as the Gamepad doesn't wind up costing like $100 alone.

I feel like that would've been an opportunity that they'd have tackled early on, I feel like they could easily do that for games to give everyone their own screens at times in games.

I think if we don't see by the time Smash Wii U comes out we won't see it at all. It may be for the best though since hardly any games use the Gamepad.