Hello,
First of all, I want to congratulate and thank the Wikimania organizing team for putting together one of the best-organized Wikimanias I've attended. It's easy to only notice the problems, so I wanted to call out the great work explicitly.
My main disappointment this year is that many sessions seem to go unrecorded. In previous years, I seem to recall that videos for most sessions were recorded, and sometimes even streamed live. It sometimes took months for the videos to be processed and uploaded to Commons or other video hosting sites, but the videos existed. If the session isn't taped at all, then the record is lost forever.
We have a lot of talented presenters giving insightful talks and generating great discussions, but only for the benefit of the small subset of our community that's present in the room. If we can't share what happens at Wikimania with our larger community, it seems like a missed opportunity for our movement. Even for Wikimania attendees, when there are up to 8 simultaneous tracks, it's easy to miss sessions you're interested in.
I realize it's probably too late to do anything for this year's Wikimania, but I'd like to start a discussion about making video recordings of all sessions (not just a selection of them) a requirement for upcoming Wikimania bids.