As to Barbra Streisand, I never saw any reason for "Yentl" (1983) to be made. To me, the story was really bad, and Barbara made a really poor guy. Dustin Hoffman had already done an excellent job at being disguised as a woman in "Tootsie" in 1982, and then there was "Victor Victoria" in 1982 (Julie Andrews also is hard to see as a guy).