Need help doctoring bean soup

In addition to the above mentioned suggestions, you can simmer it with a little Parmesan rind for added depth (and take it out before you eat it).

I would add some diced cooked bacon and onion and serve with parmegiano and herbed croutons.

Herbs. Chopped fresh rosemary and/or thyme. These are good "bean" herbs. Plus a drizzle of GOOD extra virgin oil----not the Trader Joe's/Costco garbage. Keep it simple. You want the beans to be the star.

Saute bacon, garlic, onions, perhaps diced carrots and celery in olive oil and add to the soup. Add some herbs, too. Perhaps rosemary and sage or basil and marjoram.

I'd add vegetables and herbs. You can probably do a quick saute on onions, carrots and celery until they're slightly soft; then add them to the mixture you already have with some herbs like thyme or a bit of rosemary to let them finish cooking. Other good add ins might be kale, tomatoes, and onions. When you're done, you can top your bowl off with a drizzle of good olive oil and or some large homemade croutons (chunks of bread, drizzle of oil, baked until dried out on edges). Make sure everything is salted well!