if its locked prob nothing in it.ive unlocked most systems that are unlockable most are not worth the effort, appart from the obvious ones, still things may happen,07
For what it's worth, all the sectors around Barnard's Loop were unlocked at first, and there was nothing special in them.All permit locked regions were probably locked just in case they might need them at some point. So some potential future expansion stuff wouldn't just materialize out of nowhere in already discovered space.
Later than that - it was with the Engineers 2.1 update. I was on an expedition where the planning was done before the update and the expedition itself was after the update, so we ended up having to skip a couple of waypoints and do some unexpected navigation to reach some others.For what it's worth, all the sectors around Barnard's Loop were unlocked at first, and there was nothing special in them.
It was only after, i think, the Wings update? that these sectors were locked.