I feel like OPML was designed as a “Export/Import” format, and that has led to it being underused.
OMPL URLs hosting lists of feeds should be automatically updated across feed readers following an OPML feed. You should be able to “subscribe” to OPML feeds the way you subscribe to RSS feeds.
I think this ability will allow for a lot of important, and cool usecases (your follow list on Twitter/YouTube/GitHub) is just an OPML feed that you subscribe to.
OMPL URLs hosting lists of feeds should be automatically updated across feed readers following an OPML feed. You should be able to “subscribe” to OPML feeds the way you subscribe to RSS feeds.
The only reader I’m aware that supports this is Tt-rss. FreshRSS plans to support it soon: https://github.com/FreshRSS/FreshRSS/issues/4191
I think this ability will allow for a lot of important, and cool usecases (your follow list on Twitter/YouTube/GitHub) is just an OPML feed that you subscribe to.