Once the feedback survey is closed and I obtain the data, I will create a publish a Lessons Learned page from the Wikimedia Hackathon 2016. It will have changes for next year and things to keep.
I will also include organizer lessons learned.
I will publish it here:
https://wikimania2016.wikimedia.org/wiki/Hackathon/LessonsLearned
I will also add it wherever this ends up being: https://phabricator.wikimedia.org/T138988
& will also add it to tips for hackathon organizers