-More ship types
-Maybe something that you buy and you can like scan planets for minerals that can only be found by the scanner and are worth alot
-Maybe a race that builts cities underwater
-Ability to build your own city and earn money by taxing the people that live in it
-Eable to conquer planets, cities, systems
-Eable to make your own ship desings and then built them in your city
-Eable to hire police, body guards, bouty hunters
-Maybe more planets like gas giants that you can mine very rare minerals from but they are very dangerous

Maybe i will add more later