I'm not crazy about the idea of a Black Canary movie -- especially since she was so underwhelming in the Harley Quinn Birds of Prey movie. Instead, I'd like to see a look at her actual origin as a 1940s noir character. The piece wouldn't actually have to be set then (since some people don't like historical takes -- despite the success of Wonder Woman's first film), but could still by heavily stylized. That could build up to an arena type of episode as the finale. I just don't think it would work in an introductory film (the same way the BOP movie didn't work buy throwing too many things against the wall -- with nothing really sticking).