I've always liked Marvel Westerns. I think a movie based I on the whole group could work.
another cool concept would be in "All Female Superhero Group" like the one in an early Avengers issue. I Can't recall the name they went by.I think it was "The Liberators" because of women's liberation movement of the 70s
Here's something I found on Wikipedia about them, apparently there were two separate groups over the years.