With ship A be able to dock onto 2 docks on ship B at the same time. This way you can make a centrifuge around a ship with multiple parts
Be able to set things in perfect geosynchronous orbit
Be able to set up commuter routes after completing the route before (land, air, and space). To enable sending resources without doing the route over and over.
Lots of centrifuge stuff
Other life?
A Story? (Watching The Expanse as I’m writing this)