If they don't make any more, I will be very disappointed if they don't show Bree, one of my favorite characters. He has such a personality!
I also would like to hear the song Aslan sings to create Narnia. Hearing Aslan singing would just melt my heart.
But the thing in the movies that HAVE been made I am most disapointed about being left out is the scene where Eustace wakes up a dragon, does to the pond, discovers he IS the dragon, and then cries under the night sky.
I haven't seen VDT, but I know it was cut; they kept the scene where Reepicheep comforts him, OBVIOUSLY, but they left the one I mentioned out, and which I find superior.
Oh, and this passage from PC, which just melts my heart, never made it to screen:
"AT the sight of Aslan the cheeks of the Telmarine soldiers became the colour of cold gravy, their knees knocked together, and many fell on their faces. They had not believed in lions and this made their fear greater. Even the Red Dwarfs, who knew that he came as a friend, stood with open mouths and could not speak. Some of the Black Dwarfs, who had been of Nikabrik's party, began to edge away. But all the Talking Beasts surged round the Lion, with purrs and grunts and squeaks and whinneys of delight, fawning on him with their tails, rubbing against him, touching him reverently with their noses and going to and fro under his body and between his legs. If you have ever seen a little cat loving a big dog whom it knows and trusts, you will have a pretty good picture of their behaviour." It's such a beautiful passage that shows how loyal all these animals were.
And they cut it!