The Wii U done right
1. Price: $250
2. Specs: 250 GB hard drive minimum, 4 GB RAM, existing Wii U GPU and CPU.
3. Gimmick: Gamepad second screen, motion controls
4. Target market: Gamers or families who already own another console connected to a TV.
5. Game Focus: RPGs, platformers, and action adventure games. The content would be clean enough for kids, but also complicated and often dark. If it's a kid playing the game, they should feel emotionally challenged by it, even if there isn't excess gore or cursing.
6. Flagship IP: Zelda U, X, Mask of Majora HD (a parallel game rather than a remake), Metroid Reboot, F-Zero reboot. Make a bid to Sony to advertize the PS4 working alongside the Wii U in exchange for borrowing the Legend of Dragoon franchise. See if you can't get a mutiplatform of No Man's Sky.
Really, the Wii U is a fine piece of hardware, but it needs to be sold as a support console, not a main console. The primary advatage of the second screen is that it lets the user preview TV channels without changing the channel, or worse cluttering the screen like the Xbox One does. It lets your entertainment center multitask, as you can use youtube or netflix, or even play games while A DIFFERENT CONSOLE uses the main screen.
That really drastically changes the equation. Practically all other consoles replace an existing console in the entertainment center, which means that they're basic competition is their own older models. Not so with the Wii U; it's competition is the non-purchase. Unfortunately, this is a complicated idea. Consumers have no concept for a support console at the moment, so Nintendo has to advertize to MAKE such a concept.