A "script doctor" is a person who helps fix or improve a screenplay or script for movies, TV shows, or plays. They make changes to the dialogue, structure, or plot to make the story more engaging and entertaining. Full definition
(He's also been a novelist and short - story writer, something that Ismailos doesn't bring up, though she does get into his sideline career as a Hollywood screenwriter / script doctor for hire on everything from «Piranha» to «Jurassic Park.») (csmonitor.com)
Too, Drillbit Taylor betrays Hughes's influence in scenes of class warfare, though a moment when the protagonists, running for their lives, stop to ogle a couple of sunbathers is so derivative of his Ferris Bueller's Day Off that only the rabid fandom of script doctors Kristofor Brown and Seth Rogen could account for it. (filmfreakcentral.net)
Less emotionally potent than it wants to be, and feels as if it might have been overmedicated by script doctoring to make it more palatable to Aniston's fan base. (rottentomatoes.com)