Lower the wii u cost and add value by larger game bundles and offering low cost or near free retro titles on the nintendo eshop. Actively seek third party developers to create new versions of classic Nintendo franchises like Pilotwings, F-Zero, Starfox etc.
Release a proper next gen system that outperforms ps4 and xbox one in about 2 years with a brilliant game bundled at launch.
No more pathetically underpowered home systems that are incapable of matching the performance of competitor's products. No more being a generation behind all the time. Treat your customers with some respect rather than trying to rip them off with weak hardware at massively inflated prices.