I just have to know what the first meeting was like when this entire thing was started. If I was running the place the first thing I would have said to everyone in the meeting room would have been 'What's the end goal for the story? What's the Republic like after the Empire fell? Who or what is the new threat to the galaxy? What's the hero's journey?'. Then I would have searched for 3 directors to handle each film, locked them collectively in a room together and say to them 'Come out when you're all in agreement about how your films work together', and if they couldn't find common ground keep searching until a trio could be found who could come together with a united plan.