I would like to see the OoT and MM remakes in HD with higher res textures, just because I was impressed at how much better they looked on the 3DS, but always wondered how much better they could look on a HD console.
Other than that, not much really. I still have my 3DS and never use it as there are few games I haven't beaten on it yet, and few games I'd really feel a need to go back to again ever.
I'd be more interested in some remakes/ports of GC/Wii games. Especially Paper Mario TTYD, Super Paper Mario (I love both equally but for different reasons) and Skyward Sword. The latter is no doubt happening at some point, if not on the Switch then on their next gen console. But with how Nintendo have been neglecting Paper Mario I'm not too hopeful there, even if it would be easy money for them.