It would be nice to see which instance you are in, and be able to change that instance. Specifically in the concourse, or other social areas. This would really help when getting groups of CMDR's together.
Maybe show your Instance number in the comms social tab, and then a way to change it. That way people can "meet up" with their CMDR's easier in game.
Potentially there could be a cap in max number of players per instance to prevent performance drops.