Was thinking about the starter boxes and how with 4-6 characters one had everything that could be used to just pick up and play. Then I got to thinking, wouldn't it be great if you had a box set that had a meatier adventure, that 6 people could play through as an isolated one off.
Perhaps with some rules that could allow integration into an existing campaign.
Perhaps too you could divide the story into 6 books and each player is responsible for running the 3-4 parts of his book. So player 1 gets his book and starts the session, if the players go to the cantina then player 4 does his bit, otherwise player 2 does his....