It would take a very brave and cashed up individual(s) to finance "up front" the type of Expo we "expect". Due to the nature of the industry, it would be very difficult to have all vendors in one room and all singing to the same tune. I think there are two distinct types of "Expo"s.
An Industry Driver Expo - Involving all vendors, dealers and business' that are actively in the industry and that like any industry - are profit driven. Like any activity - the Expo needs to generate money for the business. Look at the way the USA guys run Expos - They involve as many Industry people as possible. The generate the interest to generate their income. It is like bringing their showrooms into one big hall.
A Hobbyist's Expo - Involving Hobbyists - collectors bring their own games, mods, books, flyers etc etc. In Australia - we are just too small - but we don't need to go "big". Whoever wants to be there from the industry - well that's a bonus.
A bit of both, in a small scale at low costs would be the way to go.
I REALLY like the idea of hanging a mini Expo - with stalls etc at another "Big Boys Toys" show - Cars / motorbikes / Pinball !
The POSITIVE discussion within this thread really does demonstrate the passion and the possibilities. A lot better that the speculation and rumours that ran rampant leading up to the Expo.