This would allow us to monitor changes in Slack using tho Slack RSS app. One challenge would be allowing it in wikis that don't give read access to Guest.

I would like to see a private URL token that would give access to a change RSS feed for a given user, as a substitute for authentication.

I wanted to update a more or less changelog page and it could be nice if that was readable by RSS readers.

It is a nice generic protocol, which can also be entry-level step towards fediverse federation.