The journal Behavioral and Brain Sciences has a very interesting format.
Articles selected for publication are then circulated to a large number of experts in the field, who write commentary. This “Open Peer Commentary” is then published immediately following the article, and this material is often more lengthy than the article itself. Finally, there is a response from the author of the article addressing issues raised in the commentary. More description of the process here.
One of my mantras is “Every paper is a work in progress,” and I try to keep in mind that scholarship is a conversation happening in slow motion. So it is fascinating to see that conversation and development of ideas all put together in one easily accessible place. Of course, the conversation doesn’t stop there, but this format makes it so explicit.