Just a minor complaint, but I found the points you use to build ships and upgrade stuff to be quite scarce.

I had to leave a lot of systems around Cadia open (I saved it for last) while I piled on my fleets into each system to learn each one's advantages and disadvantages and have any hope of winning a battle. I was constantly checking on hive worlds to find if I could afford upgrades for resources or checking if I could afford to start up a new fleet to cover systems and finding out it would be several turns. While that was happening, Chaos would be upgrading with only one or two systems, Cadia barely being upgraded.