Great insight, thanks! It sounds like AI could play a part here in order to achieve the required efficiency, e.g. sorting out the right papers for you.
All I can say is that all the feeds that currently promise to solve that problem (Nasa ADS, Google Scholar, Researchgate and the feeds of several journals) are all pretty bad. I get several suggestions for medical/biophysical papers every day (probably due to "plasma" and "particle in _C_ell").
