I'm a big fan of the film and a big fan of Sara Bareilles, so I was pretty excited for this show. In the end, I generally enjoyed it but didn't love it, and I feel like it has some fairly distinct missteps.
The biggest one for me was how Earl was played. I didn't go through this entire thread, but I did skim a bit and saw some others expressing a similar sentiment that he was a bit too comedic, almost cartoonish. Jeremy Sisto played Earl brilliantly in the movie in that he felt like an absolutely real person and an absolutely real abuser. He was never played for laughs, but neither was he just played as a one-note sort of evil villain. He wasn't sympathetic, because he was clearly ruining the protagonist's life through manipulation and emotional abuse, but there was a subtlety to him that really made the situation seem real. And Jenna's reaction to him was very precise in the movie. She was clearly a woman who had developed a whole set of scripts to carefully handle her husband with as little blowback onto herself as she could manage. She was exhausted. Sometimes she was almost monotone in her responses to him. There was a carefulness in every single word she chose with him.
I was a bit disappointed with the score, with some exceptions. "She Used To Be Mine" remains remarkable (although I kept wishing Jessie Mueller would stop bending over and singing at the floor so much), and there were a few specific numbers I really loved, but yeah the sound and diction is a big issue. I'm usually someone who loves coming into shows blind, even with super dense lyrical shows like Hamilton, but I came out of this one feeling like I missed half the lyrics. I really didn't like Becky's big number, which is sad because Keala is great. I liked Dawn's number more, as well as Ogie's first one.
One thing that I did feel like they nailed, maybe even more than the movie, was Dr. Pomatter. Nathan Fillion is always great, but I actually feel like he was just a little miscast in the movie. I felt the overall sense of his nerves and awkwardness a bit more clearly in the musical.