I saw this based on the cast without being familiar with the material, and agree with the "charming, but slight" comment. The only other word I can think of to describe it is "cute," which may sound more dismissive than I intend. I liked it fine, this is a mostly very well done production, but there wasn't much there.
Bakula was the high point, and I thought he was in much stronger voice than he was in The Connector, or it could be the material suited his voice better. He was reason enough to be glad I saw it.
I was worried about DeBose based on the comments above, but thought she sounded very good. She's very charming and charismatic onstage, but I did find something lacking in the acting. Both Meadowlark and her second act song seem to require an emotional journey to justify the actions the character takes at the end of each, and I didn't really feel that. It was just, she sings a pretty song and then does something. The arc wasn't really there in her performance of the songs, though well sung, so something was missing.
The actor who played the love interest...was the weak point and his performance didn't really work for me. I'll leave it at that.
Judy Kuhn is glorious, and the actors playing the townspeople are all very good, but I found the characters pretty tiresome and could have used less of them. Someone mentioned above the show is as much about the townspeople, if not more, than the main characters, and that was very much a weakness in the material for me. I needed a lot more of the title character (and a stronger love interest) to sell why she makes the choices she does. Instead it all hinges on two songs, and didn't really work here, so I was left with wacky townspeople being wacky, which got old, no matter how strong the cast is.
This may not matter since the show is mostly sold out, but in the center and right sections, there is little to no rise between the first and second rows (in the right, or top section on the seating chart, it's a single step), so if you're short and in the second row your view may be blocked, and if you're tall and in the first row be prepared for complaining behind you. (In the left section, the second row is significantly higher than the first so people in the second aren't blocked, or at least not nearly as much.)