One thought I had about shows and events in general. They are perhaps less relevant and needed than they used to be because many (not all) of the reasons people went to shows are serviced by the internet. The cost of progress maybe.
One major role/attraction of the shows was for people to be able to see what was new in the hobby. New tools, kits, gear, etc. It was also a chance to see what traders/suppliers were out there (the alternative was Yellow Pages for local suppliers) and what they sold, products that were not yet in your local model shop, as well as a chance to talk to them about their products.
For traders it was also a chance for them to get a feel for market and product developments, and speak to suppliers to see and chat about new offerings.
The internet has had a huge impact on these aspects. We can get email fliers from suppliers with updates. We can visit the websites of suppliers to see who has what, what is new, etc. If we have questions we can often email suppliers. We can trawl through forums, and find information from the comfort of our desk. Forums also provide the social function of people from different clubs and different parts of the country chatting.
I have seen a lot of comments over the years blaming suppliers, event organizers, costs, greed, modelers, computer games, etc. etc. It is easy to look for blame, and easy to forget that the world keeps turning. It is nice, and comfortable, to stand still but we will get left behind. The hardest part about adapting is knowing which way to go forward.
Just some additional thoughts.