If this were made today...

Batgirl would be the main character and have nothing wrong with her and always be right while Batman and Robin make mistakes and she would be able to defeat villains easily without getting hurt and act like anything romantic/sexual is pathetic.

Poison Ivy would be a lesbian and/or someone who is not interested in intimacy with men, but uses her sexual powers to kill men and bring down the patriarchy.

Mr. Freeze would be more like a Marvel villain who has empathetic motives but goes about achieving them in a dangerous, unethical way.

Batman would constantly be telling witty jokes.

Robin would be like Tom Holland Spider-Man like trying to be tough but still coming off as a dork.