This has been a really fun exprience and i think it resulted in a good game, as it is still fun to play even after playing it like a hundred times, well, for me atleast.
As i already told you, we could probably added alot of other things to it, especially in the tech tree and enemy ai, but the game still feels complete even without them and still offers replayability, choices to be made and tactics to be implied.
if you do decide to come back to it and twist it a little bit, i think that adding an option for PvP multyplayer could elevate the game a few levels higher.
The game inspired me to start working on developing a space trade tycoon game, but that wont interfere me with helping you in your next project, as currently i am still in the proccess of designing it conceptually.
dont hesitate to drop me a mail (sent in a P.M) if you need any help.