Do you use the 3DS's signature feature? It seems that, as the handheld has gotten more and more popular and gotten more and more in the spotlight for its games, the focus has shifted away from its signature feature entirely. But the feature is still there, it exists, and games still support it.
So do you use the feature at all? What do you think of it? Would you like Nintendo to retain it in the 3DS successor, maybe improve on it?