Maybe to be able to click on a part like a space station module or cockpit during a mission which would show a cutaway of the part and you can watch your kerbolnauts do kerbal things? Though this is probably asking too much what I would love to have is the ability to take control of a kerbal like with EVA missions and explore the inside of your base, station, or ship to get a more closer and personal look at your accomplishments and what you\'ve built. Plus who wouldn\'t want to build a massive Stanford-Torus like space station, wreck it somehow, then send a ship up and take command of a Kerbonaut to explore the inside of what remains?