A nice post. Early this year, I too followed a similar path to take my web and social presence Indie - something that I control. The journal section on my website became the primary destination for microposts. I (selectively) route to Twitter via Micro.blog cross-posting feature. I receive and display all the interactions on the posts from different platforms using webmentions.
I make Hugo process and render such microposts differently. It’s custom now, and may follow any solution in future. But the intention would be my microposts would exist here.
This structure has also lent me the flexibility of the posting interface. My posts, social and long ones, originate from the app that’s convenient and relevant at the time of posting. Some originate at Micro.blog iOS app, some at quill, most replies and likes directly from Microsub clients (like this one from Monocle) and at times in text editor of my choice (iA Writer, Drafts). And that in itself is a huge benefit.
I like ring of “social” subdomain that Dan uses, especially for the reason that it can always act as the destination for my microposts, irrespective of what hosts them. I may explore that.