The story line kinda sucked and I think they could've done better with the main characters. The action was great and overall entertaining. I'm sure the fanboys and gals will be in love with another mediocre film.
This is more comparable to Suicide Squad type of movie and not like any of the Batman movies you enjoy. That's fine. Suicide Squad had more fluid characters, the story was mediocre, but the production and shots were great. IMO the action was 60% serious and 40% comical.
In Birds of Prey, the characters were not fluid or great by any means, the story was poorly thought out, but the production and action was great. Here the action is 40% serious and 60% comical.
I feel the new Harley Quinn is "OK" and there are one or two great characters in the movie, but many of the characters just sucked. In fact Harley and one other girl were the best characters in the film, but that doesn't make up for the majority. The bad guys are what make a movie and they flat sucked.
I feel that they relied too much on people's infatuation with Harley Quinn and an all girl dominant character set to make up for a poor story line and weak undeveloped characters that shouldn't be brought together in the same movie.