Since Wii U failed, what should Nintendo have done to follow up the Wii's success?

[Nuvendil]

Well I will just be blunt, it wouldn't have made much difference what they did hardware wise if their launch marketing campaign and first year marketing were as pitifully atrocious as they were with the Wii U. I firmly believe the Wii U would have done better by a noticeable margin with a strong marketing campaign. As for what they could have done better, I think holding off for a year and going for more power (maybe not as much as the PS4 and Xbox One but something closer to get better support and early recognition) while retaining the Wii U's design (shaving some features out of the gamepad to reduce costs would have helped with this) would have improved the fortunes of the system, if you wanted to keep the Wii U's feature set mostly in tact. Most people jump on the name but I'll be frank, Xbox One is a worse name imo.