Eldorion, I agree that the problem with trying to film
The New Shadow is that there's only a fragment starting the story, with nothing else written by Tolkien about it, not even a summary, framework, or timeline.
My own suggestion is that
Aldarion and Erendis: The Mariner's Wife would be a good story to film. It has both politics and romance, the romance going wrong having serious political implications, with a twist in the tale being the revelation of
why Aldarion spent so much time away from Numenor. Even if there are only fragments at the end, there are enough so that part of the story can be reconstructed. There would be the option, however, to end the story with Tar-Meneldur making known his decision to abdicate...
What do people think?