May I put in my two cents' worth?
Surely!
With respect to your comments about surgery and The Lord of the Rings: my opinion is that Jackson tried to include too much from the books, as well as adding too much of his own stuff, or wasting screen time with his own focus (overlong battles and fights for example).
Generally speaking (and not that you said otherwise Marghana) I much prefer simple cutting to alteration of character, story, tone, and so on; and I think JRRT did too, judging by some of his comments in his letters.
And of course cutting does not mean bad pacing for example -- and I'm still not sure Glorfindel 'needed' to be cut for instance, since we must get Frodo an elf-horse at this point in any event -- but the Glorfindel question is a bit complicated anyway, given the injection of Arwen here too.
I expected the cutting of Bombadil. I love these chapters, but for a film, even three films, I agree with any filmmakers here.