Its probably been suggested before and I bet it has, also I am back was just, 'unaware' of GalCiv-2 and ya'll are coming along with your product nicely.
Anyway I propose that perhaps for expansion, whatnot a small compact, individual tech tree for every GalCiv race. Their is one branch for every subject of technology like warfare and industry, etc. Some races have alittle more fruit on a branch than another but end up with about around 11-16. Not all the races are balanced but they're unique due to their way of life.
The racial technologies are unlocked by a long advancement in some route of the general tech tree. Best said a racial technology is a modification or complete upgrade, epicly new device or structure that is marvelous. The Technologies are related to the species culture, history and hostile or cordial experineces with other races.
The Yor's cybernetic bodies have allowed them to easily adapt to all diverse environments across the galaxy meaning after extensive research, they can terraform and clash on variety soils simpler than most of the civilizations.
IDK. Lets hear it community.