I'd love to use RSS for everything, but the problem has always been that most RSS readers are really really bad. I want one where I can add all RSS feeds I care about, then easily filter through the posts by assigning tags I care about, get notifications about certain tags, and easily navigate huge lists. I basically want to filter based on content, tags and other things, then set what kind of notification I'll get based on tags. One tag might give an actual toast notification, one might just be highlighted, others might be dimmed and marked as "uninteresting" and some might be straight up hidden. So far I've not found a single RSS reader I like and they all just sort of act like a basic email client, and usually don't do cross-platform either.