If the NX truly is all digital. Then these are the conditions that need to be met for me to even consider it.
1) Digital copies are, by default, cheaper to purchase than their physical counterparts, in all all games areas, and genres, both AAA and niche.
2) the time it takes for the game to fully install is damn near instantaneous. Just as fast if not faster than inserting a physical copy of game into the disk drive or SD card slot. Because eShop downloads on both to the 3DS and Wii U are CRIMINALLY slow.when I bought my digital copy of Super Mario 3D World back when the game came out, it took me a good 2 hours before I could play the game. Within that time, I could've driven down to my local GameStop, which is 20 minutes away, bought the game physically, drive back to my house, and play it before the digital version was finished installing.
Batman: Arkham City on the Wii U, took me 10 hours, 10 HOURS, before I could play it. I could've driven to Phoenix, which is a 2 hour drive from where I live, bought a physical copy from any sort up there. Go to Chae Field for 3 hours to watch a Diamondbacks baseball game, drive the 2 hours back, and be ready to play the game before it finished installing! And that's with good internet!
3) If the storage within the system is so big and the games themselves take up so little space that I can have close to 30-50 games installed and still have plenty of room for more games if I want to. On a console that only has 32 gb of storage, that's only up to 2-4 games tops that you can fit in, before having to invest in an external hard drive, as opposed to just to buying all my Wii U games physically and not have to worry about the storage filling out, anytime soon!
Same goes for the 3DS, Xenoblade Chronicles 3D would've taken up ALL of my storage and memory on my New 3DS XL if I had gone the digital route with that game! I went the physical route, and Ibe still got lots of space leftover for essential all the 3DS physical games I want!
If all 3 of those conditions are met successfully, and not a moment sooner, I'll consider going all digital for NX.
Until then the answer is: Hell No!