I’ve thought about this a lot since leaving Mastodon and Twitter, and choosing not to join Blueksy.
Structurally, I feel like it’s helpful to have a separate custom post type (in WordPress parlance) for quick notes, but my bigger hangup is wrestling with whether having a space for quick, random thoughts is actually helpful or desirable for me. A lot of microblogging ultimately felt overly performative, and I think it might be better to just have a notepad (whether digital or analogue) for the quick thoughts, which, indeed, can then be collected into somewhere more presentable/coherent in a blog.
A casual photo/image feed is probably more desirable for me than a text-focused one. Inevitably, I’ll end up rambling in there, too, but at least it’s focused around an image, usually.