Looks very nice!
Also, a Nanoswarm Fortress sounds very cool. I envision an AI Fortress with the same health as human fortresses that is made up of a swarm of tiny nano ships. For every 0.4% of its maximum health it takes in damage, one nano ship is released (their health is 0.4% of the fortress's maximum health). Fully "killing" a Fortress would release 250 nano ships. When no threat remains, the nano ships return to the fortress (if it doesn't exist, they return to the fortress's location) and add themselves back into the fortress, increasing its health by their own remaining health.
As an added bonus, nano ships deal 50% "disassembler" damage. Any ship killed with disassembler damage spawns new nano ships when it dies. One for every X points of disassembler damage where X is the health of the original nano ships. New nano ships are part of the original fortress and can recombine allowing the fortress to reach up to double its original health.
That should satisfy those people who get bored killing fortresses