Photos "Hub" no longer has direct access to friend's photos from Facebook, it links to a separate app now. People "hub" (now "me" I guess) no longer allows commenting or liking Facebook posts -- again, have to open a separate app now. And the messaging app removed the integration as well, and now only does SMS.
All of these things were key features which drove me to buying a Windows phone. If I wanted to stick with the app-centric paradigm of iOS, I would have upgraded my iPhone and stayed with that. WinPho 8.1 seems to be removing things that differentiate Windows Phone from iOS and Android. Let me guess -- was having things integrated "too confusing" for some people requiring gutting of the things that make Windows Phone what it is?
I bought my Lumia 1520 less than 2 months ago and absolutely love it -- and everything I've been ranting to my friends about with regard to why they should buy a Windows phone is going away, including capabilities which sealed my decision to buy one.
I'm not sure how I can see this in any other way than a product, that I already bought, having capabilities removed from it after the fact.
Nice job breaking it. If this keeps up, maybe this awesome Windows Phone will eventually be down to just a grid of apps just like iOS. Why even bother keeping live tiles at this point?