I'm not sure the original idea is all that clever either as a quick search on-line finds a few other people who independently came up with it. Either way, I made cobb salad soup today and here it is.
Traditionally, cobb salad should be made with iceberg lettuce, watercress, chickory and romaine which makes for a fairly bitter mix. I used the lettuce I've got: pei tsai and, um, assorted.
I kept the soup really simple since it would be getting a big flavor boost from the

When I made the caesar salad soup I mixed in the dressing during the blending but

Wikipedia, and some other references I checked agree that the original cobb salad dressing is:
1/4 cup red wine vinegar
1/4 teaspoon sugar
1 teaspoon freshly squeezed lemon juice
2 teaspoons salt
3/4 teaspoon freshly ground black pepper
3/4 teaspoon Worcestershire sauce
1/4 teaspoon dry English mustard
1 small clove garlic, finely minced
1/4 cup full-flavored olive oil
3/4 cup salad oil
plus up to a 1/4 cup water if the dressing seems too oily. I cut the recipe in half and left out the water since it's going into soup. Half was probably a little too much, but not by a lot.
And then there's the other components:

boiled chicken breast (I don't keep chicken breasts around so I steamed a thigh)
diced tomatoes
bits of bacon
diced avocado
chopped hard-cooked eggs (I prefer the slightly softer mollet)
crumbled Roquefort cheese
chopped chives
and some recipes include baby corn but I decided against it.
It's usually presented with each of the components in its own distinct sector of the plate on top of the lettuce. I tried that with the soup but half of them sank.

But, presentation aside, it's pretty darn good. The soup itself is light, fresh and tangy. And every spoonful has a different mixture of the garnishes with a unique combination of textures and flavors. The mildly tart creaminess of the Roquefort matches very well with the soup. I expected the bacon to be another stand-out, but the cool bite of a cube of tomato and the fattiness of the avocado and egg yolk are surprisingly good and overshadowed it.
Overall, a nice little dish but kind of a pain with all of those ingredients to prepare. I'd recommend it to any of you who have a sous chef to help out.