Having great fun with the game. A few small things that I see as easy or really nice to have would be :
1) when upgrading tiles, do the ones with most bang for the buck first.. (Do the ones with bonuses specifically) Thankfully the AI has same error. (Seen them upgrading one simple factory, while they could be doing the one with +700%)
2) Keep the PQ improvements at the bottom of the queue. Why make the planet bigger if you still have tiles ? I geuss it may help population, but generally i'd rather them last.
3) Make trade better. It's way too weak, at least 50% better would be start if not more. Last game I actually left the league because trade was only bringing in around 200 BC, while I wanted to go Democracy which had been outlawed. In GC1 I don't ever remember even considering leaving the league. Which brings me too :
4) Rethink some of the timelines. Seems like some things are leftovers of the GC1 month timeframe. IE the must go imperial was for like another 2 years, which is a hell of a lot of turns in GC2. Also lots of text stil refers to months in the events that happen.
5) Please please improve the governors. Please add something like GC1 where you had different govs. Each Gov could have a mil project, production focus, and rally point. It's way to hard to manage a large empire. .