Actually... I saw just such an add-on on one of the sites... for somereason, I think it was Opflashpoint.org, or Operation Flashpoint CZ... can't recall.
Guess it could be fun to ride down that HUGE mountain in the Jelalhabad map in it... or if someone makes a Grocery Shopping mod. ;D Maybee a briefing along the lines of ...
You are alone.. Cut off from friendly territory (your comfy couch at home with a cold brew in your hands) You are definitely behind enemy lines... a lone man in a supermarket... your demise is inevitable. Your mission: Run down the isles to fetch your Beer, Chips, and other assorted junk food, dodging evil pepperpots, chatty old ladies who will talk your ear off untill nothing but bleached bones remain. Small children who will throw anything at you to prevent your success. And then, the final challenge. Checkout. Seemingly endless lines stretch from the 2 cashiers on duty (strange, since there are 36 register lanes, but only 2 are open at noon on a Saturday....) You must get home before kickoff. Do you have what it takes? Enter the world of OFP:Suicide Mission.