For example: I think it would be amazing to have a download through xbox live that would allow the multi play levels to change a bit. 1) The parking lot level could be snowing outside so people utilize the streets more instead of always kicking the cars at each other in the garage. Perhaps the cars in the street will slide even further with the snow. 2) The city level with the sky bridge and the two towers could perhaps rain acid rain that slowly kills you (like bullets) if you are in it too long. Forcing people to run across the streets and be picked off or fight in the buildings. 3) The level with all the water and the boat between the mall and docks could be windy with the tide risen as if a storm is moving in. The water could be covering the docks and making the boat rock and move from building to building, being the only way to cross to the other side(like a ferry). If you try to swim you die.
Just curious where to post things like this:). Thank you for the welcome message too.