Care to explain why the Liberty Rogues should be allowed to pirate in Kusari core system?
Shikoku is fine, as it's more of a turf war with the farmers there based on the lore, but how or why would they try their luck sneaking past the BHG, Kusari Lawful, Hogosha, Farmers and Dragons (Yea, if they decide to get that close they might get in trouble with Dragons) just to pirate in NT while the Liberty and its bordering systems already offers them a good enough pirating ground?
If it was added to increase the Kusari lawful activity level, you totally got the issue wrong. The issue with Kusari lawful side is not their lack of opponent, it's their refusal to fight their main opponent - The Dragons. Back when they still had Leeds to raid, that was where they got most of their activity from, and now that they can't do it anymore, they're simply dying off. I can actually count decent members of the lawful side who are not refusing to fight the dragons on one hand. That's the issue, not "lack of stuff to shoot".
I'd rather not comment on the Brigands though, and instead wait and see how that works out... Even though I was under the impression that Brigands can pirate in Kyushu, cause they've been doing it anyways.