My idea would be for a PLA vs. USMC map similar to the Iron Gator (from Special Forces). At some point in the future the Chinese decide that they need their own version of the U.S.S.ESSEX to contest American domination of the oceans, so they start building their own aircraft carrier in a shipyard in China. When the carrier is only half complete, the USMC assaults it to stop the Chinese from controlling such a valuable weapon. Since the carrier is only half complete there would be holes in the sides for RIBS to go through, and the Deck would be missing pieces, and there would be all sorts of passage ways and scaffolding, to make it into a vertical battle.
<<<<<is an example of an aircraft carrier under construction
A follow up map would be the same place but the Carrier has been, moved by the Marines into the harbour and scuttled, but the harbour is to shallow so the carrier has tilted onto its side but is not submerged, thus the USMC has turned the badly damaged half complete carrier into an offshore base, and they use it to attack the harbour as some form of invasion, while the Chinese try to stop the Invasion and retake the carrier.
<<<< only bigger, an aircraft carrier, and half submerged
<<<<<is an example of an aircraft carrier under constructionA follow up map would be the same place but the Carrier has been, moved by the Marines into the harbour and scuttled, but the harbour is to shallow so the carrier has tilted onto its side but is not submerged, thus the USMC has turned the badly damaged half complete carrier into an offshore base, and they use it to attack the harbour as some form of invasion, while the Chinese try to stop the Invasion and retake the carrier.
<<<< only bigger, an aircraft carrier, and half submerged