This sounds yummy.
I made this salad for 4 different parties in one week plus 1 at home meal, it was just the right 'Tangy Bring Along' for a hot mid July evening get together. I had to make 1 for my family because there was never any thing left to bring home, and the different hosts even kept the marinade for their own salad side.I must say, I didn't use the kidney beans, but did use about 24 oz. of fresh green beans because there were plenty in the garden.
This was very good! I have never had edamame in a multi-bean salad, and its texture remains non-mealy and stands up well to the vinaigrette. The carrots also improved the texture, imparting a nice crunch. My daughter in law asked me to make it again soon!