One of the more intirguing might-have-beens in film history is David Lean's last planned film. When is final illness incapacitated him, Lean was in preproduction on an adaptation of Nostromo. If anyone was capable of bringing this story to film, it was Lean. A script existed (and, I believe, was even published by Faber & Faber). A few years after Lean's passing, the BBC made a miniseries out of it from an adaptation of that script. (Take note ladies: It starred Colin Firth!) I never saw it, nor read the script. Right now I don't want to. There is simply no way it could even echo the genius Lean would have brought it in the production.
True. Who else could have possibly directed The Bridge on the River Kwai, Lawrence of Arabia and Doctor Zhivago. I can't think of anyone today who is that gifted. No, not even Spielberg.