there are so many people that say Fast Roping is really hardcoded and stuff.
What i'm thinking is giving the Pilot a weapon that fires a Grappling Hook (of course later the hook will be removed from the model) off the Door and then Passengers should jump out and grab the rope.
The Helo will have to hover still and when it moves too much the rope will go off (Doh.).
I'm gonna try to make it later but i don't know where to start from.
Btw i'm sure other people thought of this already.
Because it's basically like in this old Video this but (Hopefully) cleaner.
Youtube.com <- Skip to 1:00 to see Fastropes