There are a lot of details that need hammered out here, and I don't think the chaos of the numerous different forums, each with numerous different threads, is going to cut it.
What would be more helpful is a series of live online chats. The first would obviously be some serious Q&A with the Cyantists to figure out exactly what they have in mind, what the architecture of the system will be, what their role and our role will be, and what will be fair game versus off-limits in terms of Cyan-created content. The results of the chat have to be conclusory in nature and well-documented so that there's no confusion about what's going on.
Assuming enough of the questions get answered at that point, the second chat would be more to determine what roles each guild will play, how various resources-at-large would best be used, what specific projects will be started (tidying up Plasma, writing a BitTorrent age distribution system or setting up a tracker for obtaining age torrents, documentation for the various facets of age creation/hosting/management, to name a few) and who will work on them.
At that point, hopefully, there will be a consensus on how things will work, and we'll be past the brainstorming stage and into the implementation stage with a single set of ideas and goals remaining.
The one thing that will make this project die a gruesome death is for people to be unwilling to agree on a single plan and then stick to that plan. There are enough people involved that we can't just put one person in charge of making all the decisions, and we can't hold a vote every time there's a disagreement because that leads to chaos. So pick a plan from the outset, document it fully, and let that plan be in charge, so to speak.
On a side note, I'm really excited by all of this! Even the chance to peek at some source code is exciting, but I'm really looking forward to getting back into the Cavern and/or other people's imaginations, not to mention sharing some things that have been floating around in my own imagination for some time now.