Unfortunately don’t blame this movie for that sexist crap existing. I really dig Arcee as a character mind you, but her design is a product of its time.
I don't blame the movie for sexist crap existing in the past, I blame the movie for continuing to perpetuate it in today's world. They can redesign her however they want (unless Hasbro(?) restricts them.) They're already re-interpreting the design into this "style" so make the giant transforming robot not conform to outdated stereotypical concepts lol.