I said it once, twice, thrice, etc and I'll say it again: Nintendo needs to focus on the lowest price they can pull off without compromising the experience. Games like Windwaker, Splatoon, etc prove that the Wii U as-is can push out really awesome graphics; and the older Wii proves that Nintendo can dominate by acting as a "secondary" console that people purchase alongside their Xbox or Playstation, or even as a entry console to the current generation.
but the wii wasn't successful as a "secondary" console, it was successful because they tapped into a new market, a market which has since moved to smartphones
making a console the same as xbox and ps4 is going to flop, they need something which will get those people (or non gamers again) to buy the console