I'll echo what LifeIsILL said.
Half of the time, even the comics don't agree with each other. I'm much more concerned if an adaptation manages to catch the spirit and personality of the characters.
BoP most certainly managed to catch the attitudes and spirit of Harley Quinn, Renee Montoya, and Black Canary, as I see them. Who cares if Renee is a bit old, or Black Canary African-American, if it helps the story? Huntress I can't judge, but people I trust liked her. Cass was obviously the missed opportunity here. Black Mask and Victor Zsazs were suitably creepy.
But I also don't want to judge a story only by the characters used. The story itself, and how the characters are used, matter far more. And all the characters fit with the story. It's most tightly plotted superhero movie I've seen. Not necessarily in the amount of discrete plot elements (though it has several), but in the way the plot elements and characters are all integrated and interacting.