Rant du jour! I want these features too; it will happen, either wait until Brent or Nick does it (they will) or write your own or start a project and find a developer and pay him/her to write it driven by your design for humans! Seize the feed!
Where are the extrapolations, based on the data? Where is Bayesian filtering? Why isn’t there auto-correlation between like items? Why isn’t there sorting by link popularity? Or inter-linking between feeds? Why can’t I rank feeds or categories higher than others? Why can’t I rate items and let the cumulative ratings over time determine feed rankings? Why isn’t there some statistical combination of each of the above to put what I’m actually going to care about at the top of the list and the discussions about which syndication protocol is best at the bottom? Why isn’t there an archive, to throw useful-but-read items somewhere other than the to-do list and trash? Why can’t I synchronize state information to a server, so I can read feeds at home without having to re-read them the next morning at work? (Dear BlogLines users: shut up. Web apps suck.) Why can’t I automatically delete any item which references the same links as the current item? Why is the desire for any of this a surprise?
Why? Because so far only programmers have written feed readers. Actual humans are no where to be found.
The linear programmer mindset has invaded the user model — something that never happens — and as a result feed readers haven’t evolved beyond a way to more efficiently plow through all available information. Of course you can’t skip anything! That would be non-linear!