I'm combing down the list of open issues on the Microsub tracker, and I was thinking again about how I'd want to “simplify” the experience of people following one another. I thought of this mainly for my implementation of Microsub, but I think that having the ability to preview who to add and being able to make a 'meta-subscription' can help. This would do the work of discovering the feeds at a URL, subscribing to all of them but showing them as multiple ones in a reader. The reader would need to know the original feed to recommend its whole removal, which is something that's tricky.