Cant wait to hear more about Gal-Civ 3
I have a few ideas id like to throw out
first of all some form of map wrap that could be turned on or off at the map options screen. funny I'm not really sure if i like this idea or not. Corners and edges give distinct tactical advantages and disadvantages, so nullifying this with a map wrap would change the flavor of the game.
Second, Permanent wormholes.
Third I found star bases really annoying to upgrade especially towards late game and had a few ideas.
1 AOE based on upgrade. I find it hard to believe that a single constructor can instantly build a station capable of controlling an entire sector of space so i think start the AOE small and have it increase as you level up the key aspect of the star base.
2 automatic upgrades. once built a star base should be able to be partially self sustaining. What i suggest would be to require a constructor for the first upgrade in a series (star base fortification I) after that allow the next upgrades (Star base fortification II, III, IV, V) to happen in X turns. Based on resources in or near the star bases AOE (constructors could still be used to upgrade it instantly)
3 military bases should have some form of crowd control other then having a fleet nearby. it is essentially a military checkpoint / fort, but it cant keep a single constructor or scout ship from a race you're at war with out of your space? what i suggest is a check of logistics vs installed components (or some other Check) and if it doesn't meet the requirements it would need to leave the AOE the same way it came in (any ship with weapons could still try and destroy the star base)
I had several more but these were ones I thought id throw out