It would be a very entertaining play to watch, but I feel like it wasn't loyal to the original story. The concept of time in the play was completely different to the concept of time in the books. Those who have read CC will know what I'm talking about. The story itself was terribly cliche. Rowling said the play is part of canon. And I'm really disappointed about that. I cannot accept it as canon. She also said the play would be terrible as a movie. And it really would be.
I'd still pay to see it, though.
I have really high hopes for Fantastic Beasts. With Jo making her screen writing debut, I have a lot of faith. Cannot wait.