DunderBrowell this is not getting anywhere, make a poll
If we are truly serious about this, we need more than a poll, we need a couple people to make some phone calls and inquire about things like venue rental, hotel costs, travel costs, then provide some numbers on what an event would cost, what sponsor leverage we would be able to use and what the estimated cost for attendance would be. A poll now would just be "which location is closest/easiest to get to for me"
A cost analysis needs to take into account venue rental, hardware rental (about 1.5 ethernet cables per person is usually adequate to account for broken cords, switch to switch data etc) including chairs, tables, cables, switches, projectors, sound equipment etc. as well as labour fees for security/custodial staffing.
A per person analysis needs to take into account cost of travel from the major urban centers in the US for flights, and average gas prices/mileage for people driving, hotel cost for the hotel nearest potential venue, price for transportation from airport to venue and the expected ticket cost when taking into account all of the event cost analysis, plus prize money, plus a little extra to account for the inevitable cost overruns associated with running an event like this.
A poll will not be sufficient until we have this information for all of the proposed sites which are, so far, LA area (southern california), NYC, Chicago, Columbus, Indianapolis, Philadelphia and a few more places.