I've Come Around On The Nintendo Smartphone Idea -- Do It Nintendo.

[fleischr]

They should do it as a strategic partnership with several device makers.

Think of all the money HTC, Apple, Samsung would throw at Nintendo to license this.

I also do think Nintendo could also do well with it's own smartwatch. Like a Microsoft band that interacts with your Nintendo smartphone games and NX games - but unlike Band, it'd actually be fun.