I was willing to give it a chance, because people just complain for no reason, but then YouTube gave me the finger!
The took away the feature to delete videos from your subscriptions list. I use that all the time to get the videos I've watched or don't want to watch out of the way. On top of that, it only shows one video at a time, rather than showing it channel by channel! This means I have this huge list of like 100 videos I have to sift through to find the ones I actually want to watch!
I was trying to be nice, YouTube, but you had to go and throw it in my face.