But the idea of the apparent NX Platform is to share most of their games across the two systems, thus eliminating any potential software droughts. You can't share most of the games if you have two majorly different gimmicks. I could see the NX Console retaining a cheaper version of the GamePad to line up with the NX Handheld's possible dual screens, but that's it.
Yes, Nintendo will have to take considerable thought when it comes to which hardware features will work across both handheld and home console similarly to how Wii U and 3DS both have touch screen control or two screens as well. As for the software itself, Nintendo obviously has different options available to it, but may not limited to just the following:
- make a game on handheld and offer the same game as a remastered port on the home console (like MH3 Ultimate HD on Wii U which originated from 3DS)
- Port a home console title to the handheld (like DKC:Returns or Xenoblade from Wii to 3DS), remove some hardware features like Wii's motion control which wont' work in the 3DS version of DKC: Returns
- Make a title on either platform and use those same assets to make a small-scale spin-off title on a different platform or even the same platform. We saw this happen with Captain Toad: Treasure Tracker which used assets from Mario 3D World
- Make a similar base game like Smash Bros on both handheld and home console. Provide some different content and hard features between each version of the game
- Some games will remain exclusive to each platform in order to take advantage of what a single platform has to offer for whatever the reason
- Provide a mainline franchise title like Mario Kart 9 on handheld, but use the same transferable assets to make Mario Kart 10 on the home console (including DLC). This can save Nintendo development and financial resources. Alternatively, use Mario Kart in a similar way to what was done to make Smash Bros Wii U & 3DS. With that said, I'm no expert when it comes to this game developer technical know-how, so I'm not sure what limitations there would be with platforms that have integrated architecture