The DCEU team may be learning from their mistakes.

Suicide Squad was ridiculed when it was announced the film about the most ruthless villains and mercenaries would be rated PG-13. Luckily, they might not be doing the same for the Margot Robbie–led "girl gang" film with Harley Quinn, based on the Birds of Prey comic series. Robbie says when she pitched the movie back in 2015, she said she wanted it to be R-rated.

"I pitched the idea of an R-rated girl gang film including Harley, because I was like, ‘Harley needs friends.’ Harley loves interacting with people, so don’t ever make her do a standalone film," she told Collider. "She’s got to be with other people, it should be a girl gang. I wasn’t seeing enough girl gangs on screen, especially in the action space. So that was always a big part of it."

Robbie is more than on board with newcomer Cathy Yan as director. "And then of course having a female director to tell that story. And giving a female director the chance to do big-budget stuff. They always get, 'Here’s the tiny little film'… I was like, 'I love action. I love action films. I’m a girl. What, are we meant to only like a specific thing?' So it was a hugely important to find a female director for this, if possible. But at the end of the day—male, female—the best director gets the job and Cathy was the best director," she said.

Robbie has a busy schedule ahead of her. She's also just officially joined the cast of Quentin Tarantino's 1969 period piece Once Upon a Time in Hollywood, where she'll play Sharon Tate. She'll appear alongside Brad Pitt, Leonardo DiCaprio, and, if QT gets his way, Burt Reynolds and Kurt Russell.