I stand corrected

I enjoyed the Wii but have not much experience of WiiU.

I am a Sony console collecter, and never use even the vibration function of my PS4 controller (mainly because the battery life is shocking, but also because I don't like it)

If anything needs to improve on the next gen Sony console then it is the dire battery life of the controller. Or even just the ability to turn off the smurfing light bar.