Meta - I think “site feedback” is a clearer name. There’s no need (afaik) for abbreviating the category titles, and meta makes me think it is for meta-programming.
Development - I’m not sure I see how Language differs from Internals vs. Library, so I would leave it out. But I would add Packages + Ecosystem and Deployment.
Other categories that don’t appear to be covered but might be useful include announcements, meetups (social, local, or community might be other names for this), and jobs.