Hanging out at the Long Beach Comic and Horror Con this weekend I can tell you a few things. Archery is big in the cosplay world… saw a large number of bows being carried about from Arrow, Hawkeye, Avatar, Hunger Games, Lord of the Rings, etc. Second, if you go to the show next year, definitely eat at Famous Dave's and avoid the hot dogs in the convention center. And, as would be expected, Doctor Who was very popular at the show. I personally saw a Fourth, Fifth, Tenth and Eleventh Doctor (or was the Twelfth and Thirteenth?) plus one lovely Tardis.
Here is a collection of cosplay photos mainly taken from my table.