Meanwhile RSS readers have done little, if anything, to figure out how not to waste my time "nexting" through stuff I have no time or interest in.
The entry point for any software in this field should be "how much time per day do you have to spend on reading feeds?"
For example medium.com has a brilliant little feature - labelling articles with the time it takes to read them e.g. "2 min read". Yes! More like this please.