I think it would be very simple to add variety to the game by recording several voices to serve as the "Star Base Greeting" with different accents. The proper accent could be matched to the ethnicity of the name of the starbase. So a Russian sounding starbase would have a Russian greeting, "Docking permission granted." A French one, an Aussie one, and on and on. Unfortunately many nationalities would not be represented, so you may consider adding some Egyptian, Indian, Panamanian, ... to the list and give those to some of the numbered systems. I worry that with 400 billion destinations, keeping the game new is going to be a problem.