Of totally unannounced games, I'm somehow expecting some Chibi-Robo title (don't ask me why, don't know either). Also, finally a new F-Zero title. I'm also expecting either another Labo title or another use for the Ring from RFA, maybe as a Wii Sports successor.
On Remakes, NES Remix. Plus a successor, SNES Remix, being announced.
As for already announced games, maybe Bayonetta 3 could be released next year. Offtopic, but also SMT 5 finally!
BOTW2 and MP4 are still to early in development for a release next year, I expect BOTW2 in 2021 and MP4 in 2022.
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454