I mean from the perspective of the person doing the search too. They often want to see the reference - for example the LLM is constructing an answer about some

I mean from the perspective of the person doing the search too. They often want to see the reference - for example the LLM is constructing an answer about some company policy question it is good to include references to the actual company policy documents by URL. This is easy using RAG, but very hard to do reliably just using a fine tuned LLM. See Perplexity for a great example of this at web scale.