I don't agree for a second that Wallace is the first to interpret Adelaide in this way. First of all, Vivian Blaine didn't put on any 'cute' voice and she didn't come across as dumb. Her acting style was simply of the time. Julia McKenzie was devastating in the 1982 National Theatre revival - she was the heart of that production, and Faith Prince really made her mark in the 1992 Broadway revival, seeing Adelaide as something other than shticky and 'dumb' - you can hear her discuss this in all her interviews practically. She really worked hard with Nathan Lane to make that couple real and believable. Hell, Lauren Graham, was the first bass-baritone to play Adelaide. She was awful, and her choices were really out there and very few of them made sense, but she did something 'different' I guess. These same discussions occurred with Daniel Fish's Oklahoma! -- that the actors were making new ground with these characters. Many actors have paved the way before and have offered similarly new interpretations. Now, I agree that there have been many Adelaides in the past that HAVE gone the shticky/hammy route - Sophie Thompson went overboard in the 2014 Chichester production in the UK, for example, but I adored it. She was hysterical. Maybe some of you haven't seen Guys and Dolls that much before, so your own view of the characters is limited.