TheCypherNine That is what the tags are for (e.g. https://forest.freeflarum.com/t/regional-government) to just see government stuff, but I recognize that's not ideal. There is also the main tags page, https://forest.freeflarum.com/tags, which can serve as a main page if we wanted. We could remove 'Fun' tagged threads off of the main page (they'd be only accessible via the Fun tag), but that would do a big hit to our apparent activity.
Adding new extensions is currently on hold for FreeFlarum, but once the new version of Flarum comes out we'll get a bunch of new extensions available, almost certainly including one which allows the main page to look a bit more like a traditional forum, with different categories for different topics.