I do have a question about core worlds. I may have missed it in the thread, but are NPC administrators losing access to ground operations and space operations as well as the player? If so, are core worlds being modified to take into account a loss of up to 30% accessibility and -2 stability? That strikes me as a pretty big hit for a number of worlds which typically are on the edge of just enough accessibility and/or stability with administrators.
Take Culann for instance. In a brand new game, it sits at 86% accessibility (hostile with Hegemony, Church, Pathers, and Pirates does that). If I edit the administrator to only have Industrial planning, the planet starts the game in shortage of supplies and ship hulls (due to it's military base), and surplus of metals, crew, and marines. Given Culann is essentially the Tri-tach manufacturing world, it seems a bit odd for it's default state being insufficient access.