Posted 31 December 2011 - 05:25 AM
Yeah, with the Pro add-on for the Nintendo 3DS it can easily be another controller! It'll just miss the sensor bar...
About Streetpass...maybe you can download your information from your Wii U (forget downloads, we have Spotpass, it can be done by itself!) and when you make 3DS Streetpass, the Wii U info. gets to the other user, too! Another possibility could be that Nintendo makes a social network like Home from PS3 (IDK if it was released, I've never used a PS3) and you get information by meeting people. The most coherent speculation I have is that you get information from people you play with in online games.