Conversation so far:
What sorts of information regarding the characters from 1967 spy film, Casino Royale was featured in unfinished scenes?
Peter Sellers went absent for days or weeks at a time, refused to appear in his scenes with Welles, and left the production before all of his scenes were shot.
Would unfinished scenes have changed the outcome of the 1967 spy film, Casino Royale?
Peter Sellers was unavailable for the filming of an ending and other interlinking footage, leaving the filmmakers to devise a way to make the existing footage work without him.

Question: What well known actors were missing?
Self-contained rewrite: What well known actors were missing from the 1967 spy film, Casino Royale?