My take on ROTK. Obviously a great movie on a huge scale which is what makes it fantastic, but if I had to pick it apart...
The scenes with Gollum, Frodo, and Sam get overly played out. Not even halfway into the movie and I'm hoping Gollum dies and never returns. I get sick of seeing his character. Too many repetitive scenes with Sam bickering with Gollum.
Secondly, they should not have cut out the scenes with Sauron. They should have showed how his power came to an end at the beginning as they had originally intended. All his scenes were cut out and that was a bad move on Peter Jackson's part. It would have also further added to seeing a variety of characters.
Thirdly, you don't see much of the "Fellowship" in this movie...Aragon and ESPECIALLY the elf and dwarf (the main ones). They are suppose to be the main characters yet don't have much screen time in this third part.
Fourthly, Gandalph is made out to look like a normal character. He is suppose to be a powerful wizard, yet the scenes where he is fighting and running out of breath severely downplay his character. Also, the main bad guy (the dark one whom the girl defeated) said that he will handle Gandalph. I was expecting there to be some kind of face-off between Gandalph and the main "bad guy" within the battle, yet there was none. That was disappointing.