I half recall they had Arwen Evenstar meet them before Rivendell. Jackson significantly expanded her part. Which seemed artificial and arbitrary, but the biggest thing really was the change from a journey story about ordinary people surviving the horrors of war and somehow coming out the other side; a story fundamentally about the futility of war itself, about the hollowness of victory in battle, about loss, and diminishing, and just surviving; about the importance of retaining yourself in near impossible circumstances, and of love, and luck, and things beyond all human control being the only source of any lasting victory; into an absolutely banal Hollywood action flick.