Here is a small list of what Nintendo pioneered in terms of controls in the Console industry.
First Shoulder Buttons (SNES ERA)
First Dual Pads for 3d Movement (Virtual Boy)
First Analogue Sticks (N64 Era)
First Rumble Paks (N64 Era)
First Trigger Buttons (N64 Era)
First Incorporation of Motion Technology into Controls (Wii Era)
First Disjointed Control Mechanism [wii remote + nunchuck] (Wii Era)
First 3d sensitive infrared capability.
In my opinion Nintendo is needed. NATAL was only contrived as a gaming solution due to the wii's acceptance, same thing with the Sony Wand.