Soundwave on 22 April 2015
Unless they have a gimmick that can drive sales like the Wiimote did ... I think they will continue to suffer hardware declines. Their upper management is simply too far out of touch with the modern gamer to be able to seriously mount an offensive without a miracle product to carry them.
Unifying the platform structure will help them, but it's not a silver bullet that solves every (or even the major) problem. "I want to buy a Nintendo console but there's not enough Nintendo games" is not really the chief complaint people not buying Nintendo hardware have.
But they are going to make so much money from smartphone games that eventually they won't care. Next-gen will be more profitable for them, but almost entirely due to iOS/Android.
