I think we should switch to attendance markets as I still see more upside and less downside for DEVCon here in contrast to markets around the location. Also this could lead to more iterations as there can be more markets than just one / event.
We just need to think about the reporting part. Ideally we find a more privacy preserving way - other than pointing a camera on attendees (even though we are thinking about cameras in the stages streaming to our mission-control-room to get a better overview on what is going on in the venue - but this already feels a bit wrong - and publishing the content (which would be needed here as far as I understand) - feels even worse).