I would like to have an RSS reader built into my blog. It would be integrated with a blogroll.
I’d come here to read and reblog-with-comments, and friends who stop by could use the blogroll to branch off to friends-of-friends.
This would stand in for much of the feature set in decentralized social networks like Mastodon. There must have been many experiments in augmenting WordPress to act as a decentralized social network, but I haven’t seen any.