Soundwave on 24 February 2015
I think they probably will have some kind of gimmick/add to the controller, but nothing crazy or expensive like the Wii U.
Maybe something akin to this ... a twisting controller
Would be interesting for racing games or a Kirby game (twist to have Kirby suck in, twist the other way to have him blow out, etc.) or Luigi's Mansion game or even a Splatoon game (the more you twist the more ink you spray).
Could break apart to function like a Wiimote/nunchaku. Having pointer functionality would be important too, because if its a Fusion platform, the handheld has a touch screen ... the home versions could easily emulate touch features by having the pointer instead, so developers don't have to radically alter play mechanics or certain features.
