HAHAH! I was about to say that! HenCon!
I agree though. It would have to be an UPbeat event. No one wants to drive hundreds of miles to sit around at a weekend long emptying tissue box after tissue box to soak up their oceans of tears.
So whenever we DO do it, lets be sure it's a ---*incoming cliche* 'Celebration of life' rather than harping on the fact he's gone. His work lives on! His fandom lives on. THAT'S the focus.