I recently bought a new MacBookPro, so I am still under AppleCare.
I called AppleCare to note that my RSS bookmarks, imported from Migration Assistant, were not functioning.
The support person had nothing to say, other than to confirm that the RSS functionality was removed. I asked him to escalate it as a bug up to engineering. He basically shrugged that off saying he could mention it to the other support staff but wouldn't be filing it as a bug.
So when I got the followup survey of my AppleCare experience, I gave extremely low marks, that my problem was not solved by the support person, and gave the details that this is a regression. I stated my belief that regressions should be of the highest priority bugs to fix, as they impact functionality customers were actively using.
Not sure if it helps or fell on deaf ears, but I'm at least trying to make Apple aware of how much they've affected users.
As for the "App Store" model: I dislike this. I should not have to weed through a handful of apps to figure out which one performs the function that Safari with the OS used to perform (which I cannot downgrade!), buy it without possibility of return/refund, only to discover it's not really what I'm looking for (which, it never can be, it's not integrated into the very browser I'm using to read the websites serving RSS).