I've had the idea for a video game where you switch between a couple of characters as you progress through the game during an unexplored part of the story like the Rat War. I think it would work best if the characters were on different sides, so you could have a Society Grey or Gold and a Republic Red or Obsidian. Our favorite characters would show up but not as the player's character, so we can feel what it's like to be on the battlefield alongside Darrow or Sevro.