I had to add extra salt and bacon at the end. Ended up using about 4 teaspoons of salt and 12 slices of bacon. Also used an immersion blender for half the soup in a separate container, worked just as well.
For me: 600-650 ml broth would have been plenty to make two-three servings instead of a full liter. Also remember to reduce the lemon used (one whole) to half a lemon instead, but keep one egg. Used spaghetti instead of rice as I'm not a very big fan of rice. Next time, crack spaghetti not just in threes, but way, way shorter to not annoy myself and have it constantly slap in my face. (Or better yet, use other noodles. Or orzo. But spaghetti was what I had at the time.) Loved it though. Will make again.