Power
Big-name directors like Woody Allen, Martin Scorsese, and Brian De Palma like to work with the same editors from movie to movie. They depend on you to create flawless films with no distracting elements. Because you see hundreds of versions of the movie in different shots, with different effects, with different angles, you can make good movies into Oscar winners.
Don't let it go to your head, but you have all the investors' money, the actors' and actresses' work, time and salaries, all the props, special effects, and the careers of the entire crew from best boy to caterer in your Edward Scissorhands. The director might get all the fame, but if you don't make the cut, you'll be chopped the next time she hires an editor.