Not much to say that hasn't already been said except perhaps--the BINGO was an amazing high, but by the end most of us were exhausted, I suspect, and so there was perhaps a certain lack of closure--although maybe closure is not the right word and too difficult a thing to ask of such a type of event anyway.
I thought the opportunity to include reviews and various sorts of meta stuff was a very good move and so was the creation of the LJ community as a focus.
(I enjoyed the passport project, too, although I participated less intensely.)
The origins suggestion, I think, will have to be handled with care--if you've only just started writing, re-visiting your roots is not all that attractive, so it offers less to newbies, unless you offer them a different way of doing it.