Just saw this. 5/10. The first 2/3 of the movie are a mix of equal good and bad parts, with the performances making it a positive experience. The last third of the movie is terrible.
I liked the tone of this, it was a comic book movie to the core which is great and it had some really good performances. But really I think the Enchantress singlehandedly brought this movie down from being a mediocre but positive experience to a mediocre bad one.
Actually if you cut her and Rick Flagg out of this movie, make the Joker the bad guy trying to do something of lower stakes than what the Enchantress was doing. Even adding a conflict for Harley of completing the mission sticking with the Squad or riding with Joker this would have been a good movie.