I'm especially stoked about space-to-space logistics. One of my first projects will be an in-orbit space platform factory, so that making a new space ship won't take a bazillion rocket launches just for the platforms.
I plan to have a slow but wide platform with lots of storage that just loops around between Nauvis and to hoover up as many metallic asteroids it can find, then turns them into space platforms. When it loops around to Nauvis, it ships off the platforms to any spaceship under construction that might need them.