This looks like it would integrate really well with newsbeuter. Having to refresh my full set of feeds is always what's kept me using a cloud-provided RSS reader.
Something like this should support Pubsubhubbub and rss-cloud. After having implemented something like this[0], I based my own feedreader[1] completely on superfeedr[2], which supports those push notifications as well and crawls the feeds in very small intervalls if not. That get rids of the problem of having to refresh the feeds completely.
[0]: https://github.com/onli/rsspusher, now defunct
[1]: https://onli.github.io/feedtragon/
[2]: https://superfeedr.com/