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I'm little bit unsure about badges. They are a tool you can use for gamification (so to speak: participate in that or that way to gain that or that badge) but also a tool to show what someone has achieved so far. The latter function is something I like.

Right now, I miss an option to show that some users have specific domain knowledge. Within specialised communities, there will always be even more specialised sub-topics one can ask and answer questions about.

For Software Development, it's all the primary languages one can use to write code in but also external libraries or modules. On Mathematics, one can be an expert in statistics without being an expert in number theory. On Cooking, someone can be an expert in baking without being an expert in preparing meat.

I really liked the opportunity on the SE sites to be able to gain badges for domain knowledge and this is something I can envision to exist here as well because it helps (new) users to discern if among all the answers they get there are answers from proven[^1] experts.

Apart from that, I don't like the gamification aspect too much but I think it could help to introduce moderator-related badges which can be awarded according to [the design principles of the newly introduced abilities](https://meta.codidact.com/articles/278536). Maybe this motivates users to be more engaged in "day-to-day moderating" (suggest edits for posts, report posts, create tag descriptions, etc.).

[^1]: Proven in the sense of having received a lot of interaction (upvotes) on one's posts.