From my memory... I can't think of there ever being a Halloween event or themed map. Maybe an xp weekend or calling card.
Halloween does fall in that transition time between the ending of one game and the starting of the next. So I guess the devs have had a lot on their plate around then.
Hope Raven changes that.
I also hope to see some type of event or themed map. I have loved Holiday Crash, the Irish DayBreak, and Beach Bog. Unlocking those special camo's keeps me addicted to playing the game during the event.
Ya man I like those ideas, that would be super creepy to play a haunted house themed map just for a weekend or so. Thats not alot to ask is it?