Figured I'd drop my concerns about how the new AI behavior towards borders will make it rather hard to see the racket empire. I've noticed before 2.3 the AI was pretty quick to fully claim all their worlds if given the chance. So one of the few ways to give them a chance in any moderately populated galaxy was to wall off their systems from other empires. Occasionally, I'll see them spawn in a spot where various spaceborne aliens (aka all the non-normal empires) result in their system being open to surveys, but not claimable.