People complained when Tom Bombidel (among others) were left out of the film trilogy. TB is a waste of paper, he adds nothing to the story and just proves Tolkien needed a stronger editor. I've read the trilogy twice, early 60's and early 70's and I'll stick to the editing comment. The trilogy could've been 200 pages shorter and it would have been a better read. Yeah, yeah, yeah, it's the template for epic fantasy but a lot of it is still pretty damn boring.
Now I'm reading that people are complaining that Galadiel's appearing in the Hobbit and she wasn't in the book. So what? If what Jackson does makes the film narrative flow easier, then good. The same applies to the trilogy. I just re-watched the long form versions of the films and it's one hell of a good movie. I don't know how many times I've watched The Return of the King but I still get the multiple shivers during the Battle for Gondor.
So, basically, stop bitching about changes made from the page to the screen. If the film works, that's all that matters.