@toddgrotenhuis Thanks for your feedback, much appreciated, and you're totally right. Many plug-ins just add extra metadata or new pages to a blog. My own Surprise me! plug-in is one example. These plug-ins "just work" because they don't need to change the blog's templates.
Conversation on Micro.blog and Reply by email are different because modifications to the theme are necessary. I could provide a modified template with the plug-in, but that would overwrite any other customizations already done to that theme. That's probably not what people want.
I would love to have hints and reminders – like you're suggesting. And maybe there's more we can do to make the installation process more manageable. I will give it some more thought. 😊