@IanSane
Like I said, I'm with you on the general lack of appeal of playing 3D console games on the go. But at this point, what's a mobile console going to do? You can't put the processing genie back in the bottle. You could put out a super-cheap touch dealie that's meant to play 2D games/Fruit Ninja type junk, but what would be the point? Like you said, phones already do that. I'd say that Nintendo is probably pessimistic enough about the general dedicated device market that they're willing to forgo revenue streams from selling two different devices with mostly discreet game libraries (and double dipping), and thus the single device has to do both home and console duty.
Buuut, there's a new rumor percolating that some dude on a Brazilian forum leaked the NX concept a while ago, and that it's radically modular. Screens, controller parts, additional processing units, whathaveyou, allowing you to build from a basic touch unit up to a current gen console depending on your proclivities and budget. Extreme skepticism is warranted, but going whole hog in this direction would be quite a curveball, and would fill in some of the missing pieces we all seem to be detecting about the Eurogamer leak.