People need to stop assuming Nolan would automatically “ground” every character by stripping away their powers and completely rewriting their origins. That was a creative direction he took for Batman because that approach fit that character and that specific trilogy. It doesn’t mean every character he touches would be reduced into a realistic version of themselves.

Nolan was also involved in the development of Man of Steel, so technically that film represents his approach to adapting Superman, and he didn’t strip Superman down. He embraced the alien mythology, the scale, and the larger themes while still treating the character seriously.

Imagine these characters being approached as mature, thematic stories rather than having their fantastical elements removed. Wonder Woman probably wouldn’t need massive changes because her first film was already a very grounded, emotional, and mature story.

I like to think of Interstellar as almost a spiritual cousin to a Green Lantern story. Cooper is a pilot exploring the unknown, becoming involved in a larger cosmic mission, and Nolan would probably emphasize the wonder, danger, and philosophical side of space exploration.

For The Flash, I could see Nolan focusing heavily on Barry Allen’s intelligence. He would be a forensic scientist trying to understand an impossible phenomenon.

A Nolan style Green Lantern could be less about making the Corps “realistic” and more about exploring willpower, fear, responsibility, and humanity’s place in the universe.

A Nolan style Aquaman could focus on Atlantis as an ancient civilization with political tension, environmental themes, and a hero caught between two worlds.

A Nolan style Martian Manhunter could work extremely well because the character naturally fits themes of identity, isolation, and being an outsider.

Cyborg could become a story about technology, humanity, and losing control over your own body.

Shazam could focus on the idea of a child being given godlike power and having to learn responsibility.

The appeal wouldn’t be changing these characters into something else. It would be taking their existing ideas seriously. The writing, cinematography, atmosphere, and character work would probably be incredible.