This is something I strongly want in game, docking ship to ship. I don't think it would be that complicated. You could simply have a toggle switch for docking that sets your ship to either Master or Slave mode. In order to dock to another ships docking port, just set your ships docking mode to Slave, the target ship must have theirs set to Master mode. This will allow you to dock and surrender all physics, controls, etc to the Master ship. If you don't want intruders to dock just turn off docking altogether and then nothing can dock to your ship. Of course Pirates can hail you on comms and force you to allow them to dock by threatening to blow you up. I know it will require coding work but I think it can be done and should be implemented at least by full release, preferably sooner as it opens up a lot of fun possibilities.