The last time a thread like this started, I said I thought Chocolat would make a great musical. I stand by that. Call Me By Your Name could work, too. I'm serious about these two, but...
How about a Steel Magnolias musical? If they base it on the film instead of the play, there'll be more characters. I picture a production number called "The Hairdo Hall of Fame" and, later, a killer aria for M'Lynn at the funeral. If Sara Bareilles does the score, she could even put a nod to Waitress in it, as Aunt Fern bakes the armadillo groom's cake - "How to Make Gray Icing." I'm also picturing a big montage number at the Christmas carnival: the transformation of Anelle into "the hottest ticket in town," while Truvy and her husband come to grips with his failed job, while Shelby comes to grips with telling her parents she's pregnant, while Ouiser and Clairee argue over the radio station/football game, and of course, while it is all so serious, the Miss Merry Christmas pageant continues and we see why the winner gets dethroned (with her tinsel down around knees) and her brother has his first gay experience by the gumbo booth. I joke, but if this happens, I'll expect a "based on a concept by" credit.