Just saw it last night, I can only give it a barely passing average. Most of my dislikes were with Tim Burton’s staging of the film (and I normally love his directing).
It was shot with way too many closeups, half of the film was full-face frames of the stars singing. I quickly lost interest in the faces of the actors and started getting distracted by the makeup details. Depp is a brilliant physical actor and his range and talent never shone through because of the tight shooting.
Most of the musical numbers were single-set monologues, a sole figure singing in a single room or setting, which became boring quickly. While the music was generally nice, I felt like I was listening to a soundtrack to a Powerpoint presentation of the actors. There was just nothing visually interesting going on during most of the numbers. The monologuing of the content also meant that there was very little interplay between the actors.
The lyrics of the songs were often drowned out by the orchestra swells, there were a couple of scenes where I simply gave up trying to follow the songs at all. For a musical where dialogue and plot is supposed to be carried by the lyrics, this is a very bad mark against the production.
Overall, it’s probably the worst Burton film I recall seeing, the only time I’ve seen one of his films and wished that it could have been done by a different director.