[Firondoiel]

I don't think that Faramir should have replaced Boromir. For it was because of Boromir attempting to take the Ring that Frodo gathered up enough courage to travel to Mordor. Also if Faramir had been in the fellowship, it would have most likely been Boromir that found Frodo and Sam in Ithilien. And I think we can say goodbye to the quest right there. So in answer to your question, I believe that Tolkien was perfectly right to have Boromir and not Faramir in the fellowship.