Susan Hayward or Marilyn Monroe
Ms. Hayward a big movie star and a 20th Century Fox star wanted to play Nellie Forbush but refused to "test" for the part saying she was a proven actress and box office star. I wonder what Susan would have done for the role. Surely more erotic and sexier than the lovely Mitzi Gaynor. Imagine the eroticism of Susan singing Wash That Man Out Of My Hair. Wow.
Marilyn Monroe was 20th's biggest star and had been directed by Logan in Bus Stop where MM was brilliant as Cherry. I wonder why MM was not considered for South Pacific?