As Michael Bennett so aptly put it, the role is not just about the vocal chops. It's all well and good to have sung a ravishing version of one of Fanny's songs, but as MB said, it really is about the unique qualities the actress playing the part can bring to the character.
And what people tend to forget is that the original production ran for a year and a half after Streisand left, with Mimi Hines playing the role. It wouldn't have stayed open that long if Streisand were the only thing going for it.
Cheyenne Jackson tickled me. AFTER ordering SoMMS a drink but NOT tickling him, and hanging out with Girly in his dressing room (where he DIDN'T tickle her) but BEFORE we got married. To others. And then he tweeted Boobs. He also tweeted he's good friends with some chick on "The Voice" who just happens to be good friends with Tink's ex. And I'm still married. Oh, and this just in: "Pettiness, spite, malice ....Such ugly emotions... So sad." - After Eight, talking about MEEEEEEEE!!! I'm so honored! :-)