I know when this type of show is cast, they have to cast professional dancers and so not everyone is going to be a great actor. However I think the dancers did a good job in this show. The only person I wasn't overly keen on was the actress who played Nevaeh. She could have been cast better. Also Lauren Holly was the wrong choice for the character of Monique Du Bois. For me, she didn't have the acting chops to pull this character off. Someone like Viola Davis bringing Annalise Keating vibes would have been perfect in this role.
Despite this I really liked the show. It's Riverdale and Pretty Little Liars meets Black Swan. It was a good storyline although it was very predictable. It wasn't difficult to guess who pushed Cassie and it was also easy to predict what happened right at the end as well.
One thing I didn't like at all were the odd dream sequences that many of the characters had. There were too many and I felt the cheapened the show a bit. They started to become very annoying.
All in all it's a good show with some solid performances and a very very good soundtrack. I'm looking forward to season 2.