vorpal+5You realize that your AI is already better than any other sci-fi 4X game?
Just add Diplomacy and you can take your family and RV for a grand tour while we find you bugs!
This right here. Not trying to dissuade you from making it EVEN BETTER, but it seriously is already quite good... compared to other games. Most other AI is truly braindead, however, so you are effectively doing better than the worst possible outcome.
But why make good AI when you can just make bad AI that cheats even worse than it plays and watch your player base rage themselves to death trying to figure out how to survive it much less beat it?