~Many thanks to JD for inspiring me with this idea with his own "Deadly Drive" Co op adventure
~Edited the original post with ideas I later came up with
~Thank you TheStuntDouble for your contribution
Now this doesn't have to be for Uncharted 3. Could be for future games but I'm going to use past uncharted characters as examples and the Airport co op adventure chapter. There should be a co op adventure where you play as the goons of Lazaravic. So we'll use zorksel,tetram,and sark.
In the mission you have to get to your leader who needs assistance in his assault against drake sully and cutter. But to get to them you must fight goons that are rebelling against lazaravic. Along the way other goons will provide minor assistance to you but shortly after the charatcers you play as decide that what they're doing is wrong and betray their leader after hearing some tragic last words of another goon(Dragan) and work from the inside sabotaging lazaravic's forces to help drake and his friends. This makes lazaravic assume that Drake his sabotaging his forces. In the end the goons will be executed by their leaders but not dying in vain because their actions set up circumstances in which Drake and his friends are able to survive. Although it shouldn't be the same route because the goons are arriving from a different area but eventually end up in the familiar airport. They should arrive once the mic goes out with Eddy speaking when you take out the turrets.
One thing that would be very interesting is that there can be a part that emphasizes stealth while your sabotaging lazaravic's forces. You do it silently so he doesn't know his own goons are betraying him and makes him think Drake eliminated them giving a potential distraction which allows Drake and his friends to sneak in like he did right in the beginning of the Airport chapter. If you want a good example think of the musuem chapter in Uncharted 2 where you have to stealth kill the guards and that part was very fun in my opinion because it was different from the running around like a wild chicken meleeing and blindfiring people that you usually do in this game.
Please post your feedback guys i know this idea isn't perfect but its a start and your opinions will help make it better and potentially improve a future game. Thanks