I think Samus being their Ellen Ripley is more appropriate.

Pokemon

A lot have potential. Star Fox, Metroid, Zelda, Xenoblade (the X universe), and Fire Emblem all have the highest potential I think. Star Fox as a CG films Metroid as live action, Zelda could be live action, CG, of animate-esque, Xenoblade Chronicles X live action, and Fire Emblem animated, same style as the Awakening cutscenes. But it all comes down to getting the right director and writer. Mario, Kirby, Donkey Kong, franchises like that seem less adaptable.

A Metroid movie telling the origin of Samus, how she lost her parents by the Space Pirates, how the Chozo raised and trained her and how she becomes a bounty hunter fighting the Space Pirates that took everything she loved.

It would bring nre people to the franchise as well as being a movie that can span into several sequels.

Pokémon movies are already a thing, there's one every single year, they are managed by The Pokémon Company and most of the latest one suck BADLY, still they will never let anyone else manage the manufacturing of a Pokémon game so it's lost cause...

If its live action, then it would need a huge budget.

No need for a live action film. They can make a CGI movie.

They are expensive to make as well though.

Margot Robbie as Kirby.. i would pay money to see that

Only if they want to push the boundaries of what's possible.

And it doesn't really matter what kind of movie they make or what style/tech they use, it's going to be expensive.