I think there's too much emphasis on a Micro console being for "mobile" gaming.
There is enough grunt in the new mobile chips that by the time Nintendo release their next system, a micro console would be perfectly capable of delivering a comprehensive home console experience for their games. Look at games like Freedom Wars and that's running on 3 year old hardware. Mobile hardware has come on leaps and bounds since the Vita.
There would be no need for a microconsole to mean small mobile experiences. However, there would also be no need for Nintendo to deliver a cutting edge state of the art box. I'm more than happy with Nintendo's output on Wii U, I think the hardware is held back by a hugely prohibitive cost of entry compared with it's predecessor. Nintendo's next console needs to have a much friendlier cost of entry.








