To anyone who thinks this idea will bring in less money than separated handheld and console (WiiU and 3DS), dont think about lost sales on the home console (because they are fairly small) but the improved software sales overall due to their being more games delivered to the larger install base.
Even if Nintendo's next handheld sells like the 3DS and doesn't gain more consumers it would have more games and I would assume seeing as its Nintendo's 1st Party studios being freed up more great titles worth buying.







