What youtube has very publically fucked with its site repeatedly over the last year or so adding unwanted redesigns and functionality. Their latest idiot functionality is to make the subscription list page less useful by applying some dipshit algorithm to show interesting content. Never mind they have at least two other pages that do that.
Their other recent brainwave is to kill off Vevo and other artist pages by combining several distinct accounts into one "youtube official" feed per artist and removing the distinct ones from the users subscriptions. This may be appropriate where the user doesn't subscribe to all the various "official" accounts, but is entirely pointless otherwise, and breaks the fundamental concept - don't fuck with a users subscriptions.
You'll notice their idiot updates have been against users who don't use the site the way they want them to use the site.
If it ain't broke, don't fuck with it!
Something a lot of sites & software companies coulda/shoulda learnt by now...