[overcast]

How wildly popular is it now? After the hysteria died down, people realized they don't want to be flailing their arms around while playing games. They just want a normal controller, which is why it's worked exceptionally well, and iterated upon for the last 35+ years. Nintendo keeps creating these new human interfaces, that get abandoned by the time the next console rolls around. I'm all for innovation, but when it comes to input devices, standards like the gamepad/mouse/keyboard are here to stay. Because they work exceptionally well.