The seperation of the Zenith and Spire starships into separate lines has been helpful in enhancing the Spire Elite Corps, which has been assigned to clear out the Braxis Alpha branch of all Warp Gates and guard posts. So far they've been very successful, having lost only two armor rotters (despite some misclicks on my part almost costing me a frigate).
The strategy for this is based around Monlyth being a hub from which the SEC executes guerrilla strikes on the four target planets. A small group of engineers with Cloak starship protection provides an outpost at which the SEC can repair. After the entire branch has been neutered, Shard extraction from Aperture will begin. The entire composite fleet and SEC will then be positioned on Meinhoff, which should be fairly defensible. The rest of the shard route can be safely ignored with minimal escort. Shame that the shards are immune to gravity, or Logistics stations/Zenith Spacetime manipulators could speed up the process.
Unfortunately, the Dyson Antagonization is beginning to take its toll. Mienhoff is the only target, so consolidating turret defenses there has been adequate defense, but lately the Dyson waves have been consisting of 7-8 gatlings, which was more than my existing infrastructure could handle. More turrets have been built and the 2200-strong Composite Fleet has been brought in from Agria to ensure security, but in the event of an attack the fleet will need to be relocated.
@7.33.15: Oh, balls. The Hybrids have executed a massive strike on Agria. 27 hives with their associated fleets have gone on the offensive. Even my fortress was not sufficient to deter the attack and the base on Agria was destroyed. A section of the composite fleet was dispatched but did not arrive in time, fortunately the AI were intercepted on their way out and destroyed. My fortress was left alive, thank goodness. Wouldn't want to have to build another. The real tragedy though is the loss of the Mk. V Armor Rotter fab. Fortunately a second fabricator of the same type has been scouted on Nebulmaty, so the loss is not permanent.
There was a mush less successful attack on Moatbiqui, a single hybrid. Must have been lost. Poor thing, got stuck in my gravity trap. Such is life.
After I finish with the Braxis arm, which is soon. (1 planet to go) I will clear the threat from my neighboring worlds and begin extraction. The SEC is so ridiculously effective it makes me wonder how the Spire lost to the AI in the official canon (I'm sure I'll find out soon enough