I believe it will be a way to virtually implement a sheer rock wall, a "clorf" if you will, on every map. Upon said clorf, there shall be a series of remote controlled lerks, or "Lorks". These "lorks" shall proceed in sporing any marine that passes until a sizeable number of shotguns, or "shirtguns" have been dropped. After in which the lorks shall flee the clorf, in search of a safer, less shirtgun infested area.
Oh, and a giant statue of ANeM on every map.