Puppyroach on 19 January 2015
I still think that their best option if to create a handheld/home console hybrid. What the collective sales of Nintendo products each generation has shown is that Nintendo is very consistent in their total sales (except for 7th generation), it is just that their share of people on handheld vs. home console varies. Combining the two might prove highly succesful, and it would also cater to the micro console concept that the OP refers to.
