So excited to hear that the Ghost blogging software is going to support federation via ActivityPub! https://activitypub.ghost.org/
If you sign up for updates, they have a survey where they're asking for feedback. Now's your chance to get your suggestions in!
Cool to see Ghost taking this step, while Substack is over there trying to build walls around their product to trap people in (eg https://www.thewrap.com/substack-follow-feature-problems-subscriptions-down/)