Well, in this fanfiction, Luffy could interact with the Marines in a more diplomatic way. Since he has the advantage of time travel, he might understand the reasons behind the Marines' actions better. So, he could try to negotiate or make deals with some of the more reasonable Marines. He could offer to help them with other threats in the One Piece world in exchange for them leaving his friends alone at Marineford.
Luffy's interaction with the Marines could be completely different if he time - travels to Marineford. He might be able to use his charm and naivete to his advantage. He could make the Marines underestimate him, and then when they least expect it, he could pull off some amazing stunts to rescue his friends. Also, he could try to befriend some of the lower - ranked Marines who are not as set in their ways as the higher - ups, and use their help to change the situation at Marineford.
Chapter 210, "Are All of Jiang Li's Fans Hidden Big Shots?", is the clearest early answer because it turns Director Sun's situation into a concrete plot event. The chapter gives readers a real answer by opening on This was Zhao Lang's first public appearance.
Chapter 285, "Ksitigarbha Bodhisattva", is the clearest early answer because it turns Chen Xing's situation into a concrete plot event. A useful checkpoint is the way the scene starts with He could distinctly feel his back rubbing intimately against the...
Chapter 39, "Is This Book an Out-of-Print Buddhist Scripture?!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event.
Chapter 120, "Jiang Li Can Actually Do Acupuncture?!", is the clearest early answer because it turns Sister Li's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Facing the sudden and somewhat strange request from Jiang Li,...
Chapter 204, "Establishing Authority", is the clearest early answer because it turns Miss Su's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Su Yinwan didn't move, but Director Qian turned around, ran to the...
Chapter 238, "The Guests Were Dumbfounded, The Audience Was Excited", is the clearest early answer because it turns Shu Yan's situation into a concrete plot event. It opens with Jiang Li was actually first on all three leaderboards?! and closes on And, to Zhou Xu's alarm, they did find a problem..
Chapter 169, "This is What Happens to Show-offs!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. It opens with Everyone: "What?!" Seeing the shocked and bewildered expressions on...
Chapter 138, "From now on, let's get to know each other again", is the clearest early answer because it turns Shu Yan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Is there such a good deal?
Chapter 91, "Jiang Yan is Number One on the Trending Searches Again?!", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. It opens with When Jiang Li saw that he had been assigned a harrow, Qi Tianyu felt...
Chapter 262, "Flash Change Quartet Speaks Out for Jiang Li", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. The chapter turns that into something concrete by moving from Wen Jiaojiao couldn't stand it anymore and immediately logged onto...