I know it sounds farfetched at first but if you read the script it is a great movie, with interesting dialogue and situations. For instance, instead of Joey Leone looking like a slouch of a person, he is sadistic, rude, and classy. And Ray Machowski is Ray Machowski.
I decided not to use characters like El Burro or Marty Chonks, or any side-mission characters like that because I feel they would be a waste of time and dialogue. Don't worry GTA fans, in the next GTA project, El Burro will be in it. Trust me, when my indie movie comes out late-next year, I will post the script to GTA on this board.