Those "boiled to death" veggies, if not to your liking in texture, can be thrown into the blender with a little stock and used to flavor and thicken the stock. Also, both sage and thyme are main ingredients in Poultry Seasoning blends. I personally prefer to season with discrete spices and herbs rather than comercial blends. Thant way, I can taylor the flavor to what I want, rather than someone else's idea of what's right.
IF you want a creamy batch of chicken and dumplings, make up the dish as you did, and remove the dumplings to a seperate bowls. Next, make a roux of flour and chicken fat, cooking to a very light brown, just to remove the raw flour flavor. Thin to a thick sauce with cream and chicken stock. Stir into the broth. If you want veggies in the soup, cook until done before adding the thickening sauce. A bit of turmerick will add flavor and color to your soup as well.
Veggies that compliment this soup are celriac (celery root), carrot, onion or leeks, garlic, bits of sun-dried tomato (very optional), celery, diced rutabegga, sweet peas.
Seasonings may include mushrooms, salt, pepper, red pepper, thyme, sage, basil (in very small amounts), garlic powder, fresh fennel root (again a little goes a long way), turmeric, Maggi, and chicken soup base.
Serve the soup in bowls and top with the dumplings.
Seeeeeeya; Goodweed of the North