I would really love to find a way to include reference to a more large-scale stormtrooper uprising, like what happened in the Trevorrow version. But all I can think of now is 1-minute deleted scene from the Last Jedi (a stormtrooper recognizes Finn in an elevator, Finn says “please don’t do this,” and the stormtrooper makes up a cover story, allowing Finn to get away), a 30-second deleted scene from the Force Awakens (where Finn, still in full stormtrooper armor, lets a random civilian go) and possibly repurposing the line “all over the galaxy” from the end of the movie. It would be really hard to make fit but I still think it might be worth it.
Or, failing that, I’d maybe want to find a way to add in the stun-blaster effect (from ANH and TLJ) when they shoot the stormtroopers during the Star Destroyer rescue mission because… seriously… the stormtroopers were all kidnapped and brainwashed as children, and yet the heroes kill SO MANY OF THEM without a second thought. I mean, I know it’s an action movie but SERIOUSLY. They create characters like Finn and Jannah just to show that stormtroopers are people and yet they still treat them as cannon fodder. I can’t be the only one that finds that really uncomfortable, but I haven’t heard anyone else talking about it.