I made a mission like this before on the old forums, It was called Delta one is down. And before you say it, this was before Black Hawk down came out. ;D
I'm not good with names.
Had (in my opinion
) two great cutscenes, but the point is, its not easy to make missions like this, some players can start playing and not see a single soldier until they reach an extraction point. If you haven't already thought about this, I would get Toadlifes multiple squad hunt script, or whatever its called. Would likely help in this mission.
Getting shot down behind enemy lines, I don't know, would you really give extra orders to the pilot?
Just my opinion anyway, though these missions can be quite intesting.