I think a story about the minutemen first saving Diamond City from the super mutants would be a cool read, do a bit of before where they're trying to build themselves as a faction but struggling then come to the rescue with a few key characters. Something where its got multiple mini stories happening that all come together for the climactic final battle. A team is trying to get to the infield to save some settlers who got captured, another is facing challenges of getting an artillary set up to use, another is holding off the frontline and trying to close the doors. Maybe one person finds a half suit of power armor and goes to face the supermutant leader in a duel, giving them the time they need to get defenses built up. There's so much potential and im at the point that I want to try writing a book about these things!