In terms of future films, Donkey Kong is an easy choice. Luigi's Mansion would also be a logical follow up. A film up against Wario & Waluigi, then even giving them a villain "solo" movie, or Bowser. But! That's all Mario adjacent.
Nintendo properties generally have a silent protagonist, so you need someone who can talk. A Kirby film could work if you add a talking hat or something.
I'd love to see a Metroid film, but I think a PG horror/thriller/isolation film would be hard.
Splatoon could be an interesting choice. With the success of K-Pop Demon Hunters I could see a Splatoon movie that leans heavily into music.
Star Fox would actually be an excellent choice but we haven't had much in that franchise for a while.



Hold on. If they put everyone in wheelchairs that have a boost button this could be fun to watch. Also everyone is dressed as a furry. And all your friends are yelling at you.
I'm in.