Yeah, it's tricky for us to balance what things we want to tell with what things we should tell to make the story enjoyable (and wrapped up). At one point, we decide that if we don't include the trigger to the story beyond (ex: flashback and the ending sequence), it'll make it less attractive to think about about after the players finished the game :<
Anyway yup, It's something we're struggling all the time and what I think we balance it better for our next game.