Great reviews from the 9 and 13 year old children, husband, and me; only my daughter didn't like it.
I added about 1/8 of a cup more peanut butter. Started with just a few drops of hot sauce, which was just right for me, and let the boys add more to their individual bowls.
I used a sweet potato instead of regular potato, and more red pepper cubes than called for. Seems a very versatile soup and might take any veggie well: corn, maybe something green like edammame or baby lima beans.