I've seen the original pilot. It seems they're re-shooting the scenes with Sherilyn Fenn, since they have certain plans for her character that conflicted with Ms. Fenn's schedule. I think I read one of the set's being redone as well.
The pilot is well-done. It's got a decent plot and writing, and it looks very slick. It made me believe in the show's potential. I think it's being put on against the West Wing, so thank God I have a VCR and can tape one and watch the other.
The show is much like Smallville. I like Smallville, the characters are interesting (some more than others), and the actresses are gorgeous (which isn't enough to get me to watch, but it's icing on the cake). Some of the stories are quite good, while many are fairly mediocre. But it has potential. This is my assessment of Birds of Prey, so far. Hopefully, on both shows, the creators have learned from Smallville's first season and will move away from the shallow villain-of-the-week formula.