I don't really see the point of using audio from the characters talking, considering it's pretty much all just what they say in the movie.
Can open up quite a bit of editing freedom something like that can....
What do you mean? They say exactly what they say in the movie. I guess you could use Brett's and Dallas' audio logs, but I don't really see where in the movie you could fit that, or what purpose they would serve.
Maybe if Monroville wanted to try to reconstruct the famous airlock scene AI would be useful.
Really I only see the sound effects being of any use.