I've noticed they rarely ever go and build ships over 600kt. In fact I havn't seen a battleship yet and it's been 40 turns since i first saw the first battlecruisers. I'm no good at AI modding but i think there is no design over 600kt in the design creation. And i think maybe some battleship entries to take advantage of the next mount up, these should be built sparingly however if you can mod that.
So far they're wiping the floor with Atrocities United Consortium of Planets with their smaller designs but the UCP has just researched dreadnoughts and the tide in the war seems to be changing. They also expand rather slowly so maybe focus on that.
