I think you guys actually need more open communities and not less.
Quark’s is great as an off-topic zone. The theme makes sense because the bar is somewhere people go to unwind and not necessarily talk direct shop. Stuff like news that’s Trek-adjacent fits perfectly in here, but the subsequent topics listed after other sci-fi television kind of deserve their own community. I think the scope of Quark’s is too large.
Navigating the fediverse and server meta have traditionally been their own communities as a /c/meta sort of affair. Those are definitely things that only the @stw community would really want to discuss internally and perhaps should be kept instance-user-only, but something like news and other “adjacent” content is of value across the federation and the opportunity for everyone to post just makes more organic sense to me. I would also take the opportunity to have another themed name, like /c/battlebridge, /c/ops or even /c/conferenceroom for the meta community.