I hope they DO port Wii U games to NX
and make them better. Super Mario Maker but with bigger areas to work in. The ability to color stage elements, some basic form of music composition, user featured stages, more powerups, more enemies, camera settings, more settings. Put Mario costumes in SMB3 at least too.
Splatoon with more weapons, more modes.
Smash 4 with DLC characters/stages/costumes and then new characters/stages/costumes. More alternate palettes, the features from the Wii U AND 3DS versions.
Release them at launch for maybe even a discounted price. It would be awesome, I’d probably rebuy most of them.