Hal 9000 said:
About your suggestion for ROTK that we remove the mystery of what Sauron will do, this would raise some trouble. In the movie, they want information of Saruon's plans from Saruman but don't get them because he is killed. So then Pippin accidentally gets some from the Palantir. And that is why they go to Minas Tirith, to get the heads up on Sauron's plan.

The only way I can think to bring this in better line with the book is to remove Gandalf saying that they got a glimpse of the enemy's plan, and maybe get rid of the "information" aspect from Saruman's final scene.

I took a look at these scenes, and think it could be doable. The Saruman scene will be difficult to edit, but the scenes at Edoras can be made to work. After Pippin has looked in the Palantir, Gandalf asks him what he saw. You could cut from this to "I saw... I saw him!". Later, in the Golden Hall, you could cut from "...he told Sauron nothing of Frodo and the Ring" to "His defeat at Helm's Deep showed our enemy one thing etc." This would also make Gandalf a stronger character, since he already knows Sauron's next move and how to respond to it.

Some more suggestions: Use the theatrical versions of the Council of Elrond and the fellowship entering Lorien. I thought Gandalf reciting the ring verse in Black Speech in the EE was weird and out of character. It was in the book, sure, but not like that. As for the entrance to Lorien, the costumes of Gimli and Legolas are different from the ones they wear in the rest of the movie in the EE version of the scene. Also, some of the shots were reused when Frodo looks in the Mirror of Galadriel. Oh, and in RotK, I suggest using the theatrical version of the Paths of the Dead. The EE added too much slapstick to the sequence.