Mythicon 2013 has already occurred - - it was August 17. 2013 - - but the organizers plan to continue this as an annual event. Read through the 45+ pages of discussion comments and see how this developed with over 2 months of planning and also the "afterglow" of the participating delegates.
Hopefully, if you could step up as a host member and get on the ball now in gathering the locals, we can add a Washington DC or Baltimore MD meeting spot pin to next year's map. It's never too early to begin!