When a person hits that subscribe button they are saying, I want this person's content... not I want you @Youtube to decide what portion of content I get.... C'mon guys, to subscribe is an action, which means that sub is saying, give me this content
pic.twitter.com/ie8N97VQzF
Your sub feed still messes up sometimes, at least on mobile. I do like the bell system more but if not all of my subscriptions appear in the subfeed there's no point