Two questions (one's a stupid newbie question, I know)
How close is this project to completion or is it one of those ones that is complete until you find a way to make it better?
How do starbases work? Am I supposed to fill my territory with them? I come from Civ4 and I have everything else understood except for those starbases.
Well as things stand, the mod does what it was supposed to do. But as I play games with the mod or as I hear feedback I find there are ways it can be improved further. It's actually been a couple of months since I fired up GC2 because I've been playing Star Trek Online, even I need a break from TBS now and then.
Starbases are multi-purpose space forts, in a nutshell. You can only have four of them in a given sector, so you need to choose carefully which (if any) you will build in a given sector.
Economic starbases magnify industrial and research capacity on planets within the circular range, or can be used to improve income from trade routes (best used in a sector far from your planets, where many of your trade routes pass through).
Military starbases can increase the attack and defence of your ships with assist modules, slow down enemy ships with warp interdictors, or speed up your ships with stellar wakes.
Influence starbases can magnify your influence on another civ's planet or mining bases (but minor civs are unaffected) and can also counteract another civ's influence if your planets are being swayed by their culture.
These affects can stack.
Mining starbases are built only on a resource. They exert influence over the space that they're in like the above three starbases, but only influence starbases can ramp the influence up to frightening levels. Mining starbases extract that resource, which improves a particular ability of your civ. They have no other effect.
All of these starbases can be equipped with defensive and offensive modules in case they are attacked, but in the later game these are inadequate and you will need to either intercept fleets before they can attack and destroy your starbase (which eliminates the improvement to your civ's ability) or station a fleet or three in the same square as your starbase.
Then there are Terror Stars. Unlike the other starbases, these can move, at the blistering speed of 1 square per turn. Their sole purpose is to destroy stars, and therefore anything in the star system at the time. They are not used up in the process but since they have no conventional defences, you will need to protect them with a fleet to get them into position.