Yeah more custom badges are fun and a good fit! You could arrange the order of the badge-groupings, so your custom badges show up on top of the badges page. Could also theme the trust levels badges with custom names and icons.
Another idea: You could use less colors on categories, a huge mix doesn’t really help for more intuitive navigation. Similar to badges that stand out, you could style some tags to highlight topics. I sometimes do that by forking my component to define unique styles: Colored Tag Styles