Speaking as another person implementing these protocols: I found this document useful as a checklist of issues to think about, along with commentary on how one implementation handled them. As it happened, I ended up doing most things slightly differently (Tim and I were each on at least our third implementations by this point, and had talked about a lot of it as we went along), but I still found it useful. I suspect that a new implementor coming in cold would also find this valuable, for more obvious reasons. If this isn't enough to make a draft worthy of publication anymore, push the IETF over and bury it, we're done.
