Mario, Zelda, and now Donkey Kong?
If they do more, I'd imagine it'd be one or more of these, roughly in order from most to least likely:
- Kirby
- Starfox
- Metroid
- F-Zero
A few that are less likely to ever be movies, I'd say:
- Fire Emblem
- Pikmin
- Mother
And of course there's stuff like Ice Climbers, but I'd be really surprised if something like that got a movie.
The above, of course, doesn't count all kinds of potential spinoffs like Mariokart, Dr. Mario, Wario, or Yoshi getting their own movie.
Oh, and of course Pokemon has gotten tons of movies already. Of course there are going to be more of those.
Finally: Nintendo, do Star Tropics, you cowards.