So the game ran reasonably well. Of course, I mainly see the flaws, and there were many of them -- there are a lot of things that need to be fixed before this gets re-run. But the players seemed to mostly have a good time, and the majority of the plots worked out reasonably well, so I'm decently content: it wasn't a masterpiece, but it was a pretty good game.
My thanks to the other GMs for making this all possible:
umbran for providing the calm and good sense that was much needed throughout the chaos, as well as doing his usual fine job of codifying all of our random discussions into a well-written rulebook;
anu3bis for providing the needed sense of creative whimsy at runtime;
laurion for coming in and GM'ing the second run despite only finding out the plot web as he played the first one; and treble thanks to
jikharra, who provided lots of ideas and sanity-checking throughout the writing process. He also gets the Steve Tihor Memorial Speed-Cathedral-Building Award for coming up with both the mechanics and details of the entire Castle in one week flat at the end there.
Over the next couple of weeks, I'll be putting together a cleaned-up version of the wiki that makes sense, removes all the confusing distractions and discussions, and includes all the last-minute materials that didn't get into the original version of the wiki. At that point, I'll post a link so that past players, and those who don't mind being spoiled, can see what all I've been doing for the past six months...
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ETA: Dan's LJ handle.]