On the other hand, if you watch a movie all the way through to its end, sometimes the director will make his final statement with the music. For instance, Titanic seems to end with that uplifting Celine Dion song, but if you watch it past all of the credits, the music at the very end is quite scary.
I fear that they will also remove the scouring of the Shire. I was looking at some sites, and I saw what I think was a picture of Saruman being impaled. I'm afraid they're going to kill him off, instead of just trapping him, and then eliminate that part of ROTK.
I guess it's not essential to the big story of middle earth, but I always liked the scouring because it shows how much the main hobbit characters have developed.