I have no idea how anyone could skip the WiiU, but here I am on a gaming enthusiast site reading this.
I've brought this up before but in 2014 Nintendo released DK Tropical Freeze (one of the greatest platformers of all time) and Mario Kart 8 (the greatest kart racer of all time) early in the year. They ended the year with Smash 4 (some may prefer Mele but 4 is top quality and full of content) and Bayonetta 2 (one of the greatest action games of all time). In between those amazing bookends they dropped solid titles like Hyrule Warriors, Captain Toad, etc. Yet gamers ignored it. Nintendo ran circles around their competitors. They released the 4 best games of the year and gamers didn't care. They would rather vote Shadow of Mordor goty. :/
2014 was one of Nintendo's best years of quality game output ever and it didn't do anything. And following it up with a 2015 with Mario Maker, Splatoon, Tokyo Mirage, Xenoblade, etc didn't change things.
I have no idea what Nintendo has to do to pull gamers away from picking up trash in Fallout or whatever, but it's clear putting out amazing games isn't enough. If putting a screen in the middle of a totally traditional controller is enough to scare gamers away, then there may be no hope.