Once your membership runs out it's unusable. For all intents and purposes, readers don't get 'no membership' functionality You lose access to member articles, which is fair. However, it's majority of your feed. The only signifier is a star under the title, so it's more work for me to search through all the articles to find the few that are readable. In order to make this usable is to suggest more readable articles, toggle visibility of member articles, or to add a feed of readable articles.