Crusade Feedback edit: Holy Hell Batman, These Upgrades Are Buggered!
First, this is a nice improvement to what were some really easily exploited mechanics. I've never been able to handle high level AI settings in GalCiv, can't handle em in Civ games either, it's sad. Until the third iteration anyway, where you could have massive production super powers using the right buildings and adjacencies with layers of starbases in orbit.
I expect I'm going to have to turn it down from gifted now, so that's nice. Not so nice is social production.
Social production adjacency bites. What do you get when you build a starport at a planet? A planet that is better at producing space ships. What do you lose? Large quantities of adjacency bonuses. My factories boost the starport, but the starport doesn't boost the factories. Which means a starport surrounded by factories gets you nice base production, and not so hot total production. The starport isn't too shabby, since you're going to be pumping loads of production in a major ship facility and that missing 15% production is negligible next to the base level increase. Why would I ever build social only improvements though? Either I'm creating a fleet producer, or I need enough production to build up the planet. Once I have my population up a bit, that +1 is going to be pretty small potatoes, and what have I got room for, two, maybe three production buildings at the typical planet? Once you're in the 20-40 population neighborhood, it's absolutely terrible.
Edit: With fixed factories, the mine is actually quite useful(because you literally can't make a research/money focused planet with low production without one) but it still bites. Why? Because that damned social production adjacency sucks.