I would imagine that its incredibly tough to run a convention of any size without fan involvement - from what I've heard they can be very dry and impersonal(Wizard Worlds endeavors, San Diego Comic Con, etc).
Without the Fan Communities embracing them(and if TFW was under represented thats sounds to be what happened with Botcon to a point), I'd imagine it gets generic.
That said I like the "Nest" setup you guys described. That sounds like a really fun idea that would port over well to a G.I.Joe theme.
We're doing something similar at C4 with our Mandalorian friends. They will be collecting "bounties" on Con goers - as well as taking part in a "shoot a Mandalorian for a buck" nerf gun game with all the procedes going to the Raunbow Society.
They are going to have a jail set up for the bounty thing and people will be able to give a minimum donation to get their friends "arrested" if you will. That friend then needs to be bailed out of the prison set up by someone - or be simply set free after a predetermined time.
Participation is optional of course.
I'm also working on getting a Transformers trivia contest going for C4(Maybe a Star Wars one as well), as I agree with Proto that its a cool feature for a convention.
I'm really jazzed up about the new toy announcements surrounding the Generations linup. I can't wait for Jazz and Tracks.