How will Nintendo's next console be successful?

[Dr.EisDrachenJaeger]

Fusioncode said:

Dr.EisDrachenJaeger said:
It will also follow the WiiU's excellent design process^

Why would Nintendo make the same mistake twice? 

What mistake? They designed a very efficient piece of hardware with no bottlenecks that they can scale up and scale down( shrinking in the die ) in some years.