Do you know what would be very convenient?
A supply between the player's bases.
Let me explain.
If I want to destroy my first base because I want to move it elsewhere, right now, I can only destroy it and load everything I have onto all my ships and then fast travel... A real pain in the ass, in my opinion.
What if we had our own courier? You create a ship for the courier, and he makes the trips to pick up and drop off—I think a maximum of a couple of couriers, and an hour or two to go, pick up, and drop off.
What do you think? I think it would be incredibly convenient.