I just figured out how one could make a group blog page using existing Nostr web clients.
You can already log in with an `npub` and get a read-only view of a user's feed. They even can follow themselves.
If it were easy to specify this in a URL construction, ie, make a path for this like the various top level directories used in these web pages URLs, you could then create a link that redirects to it, and the only thing required then is a means to rewrite the URL, possibly some DNS trickery to bind a FQDN to a redirect would also work.
I will probably look into how it can be done in the next day or three. Might not be easy to do. iframes might make it easier, this way there is no need to tamper with redirection.