The format is such that ongoing conversations about past diavlogs won't happen. The most recent one will get some feedback until the next one comes (or soon thereafter). With fewer diavlogs and the desire that all get comments, I strongly believe this is a benefit in the eyes of those who run the site. It also makes meaningful discussion unlikely to occur.
The disqus format is okay for a commenter with my short statement style, but I big-time saw the limitations of it when Ocean was commenting yesterday. Following the posts became like a dizzying merry-go-round.
But the bigger problem is the quoted. In the past, vlogs were like little jewels that could be savored by visiting them, referring to them, or linking to them from cached dingalinks.