It might have a minor beneficial impact to tourism in Saint Barthelemy and Norfolk Island from geeks wanting a trendy new account registered in a territory with fewer than 1000 IPv4 addresses allocated.[1]

A more useful addition would be a contributions calendar similar to GitHub's [2] but focused on which time zones the user is active within, and importantly, the latency of the user's replies. It's trivial to fake geographic location observed through source IP addresses (or even RTT multilateration) but much harder to fake time zones a user is active within, particularly if monitoring latency of replies.

edit: To further clarify, I don't think a contributions calendar would be beneficial to HN either. I've never cared to think about the country a commenter resides in, and don't care about username/real name either unless the commenter is appealing to their own authority (e.g. "I am the author of this software"). Even then, the usefulness of an appeal to own authority is often limited to the ability to reverse lookup the user's personal website (which itself is proven to be notable from other sources) for a link back to their HN profile.

[1] https://impliedchaos.github.io/ip-alloc/

[2] https://docs.github.com/en/account-and-profile/concepts/cont...