Isn't this already possible? I'm not sure what you're suggesting.
I highly recommend adding more information to your feature requests than just the title. There might be a great suggestion here, but there's no description of what that could be. Readers can already search articles by tag, both via the Search bar and by clicking tags listed in article Metadata. Writers can create tagged article lists for readers to access. Privacy settings, secrets, and subscriber groups can already 'filter' what articles and content readers see. So what's the actual request here?