caitlinette said: "I walked in not knowing the show at all, and loved it, but was very puzzled by Gussie. I’m not sure if it was the actress, the way the role is written, the directing, or a combination of both, but she came off as a total caricature, almost like a Sally Bowlestype. It felt quite incongruent with the rest of the production. On another note, whydid they not try to change up Mary or Charley’slooked throughout the show? Gussie went through so many changes. You could easily track her throughout time, but the others looked virtually the same decade to decade, with no fashion (or hair) changes at all."
I mean they do give Mary that odd/awful party dress in Act II but I see your point. I think with Gussie you're meant to see her extreme transformation from Joe's more mousy (for lack of a better word) assistant to a STAHR. I do think she's TOO caricatured, and Maria Friedman seems to bring that out all the more in this staging compared to the proshot we have of this production from 2013 London with its original cast.
One of the things (among many) that I don't think is improved in the current revised Merrily book is expanding Gussie's part, and making her a full on femme fatale type who Frank simply can't resist (done, in part I think, to make Frank's later decisions more sympathetic to audiences...)