i voted maps but there's alot that they can add that would improve it alot, such as adding more to a campaign such as an extra level or two maybe even have a choice in which path you choose such as going down into the sewers as opposed to climbing in a hotel and continuing there on, and even other things such as death match (2-8/4 humans(your choice)) to other things like survival (they put you on a large circular map with about 12 med kits, any weapon you want, and every 5 rounds and ammo thing comes out) and you have to fight to the death(wait, aren't they coming out with a survival mode?)