RE: Multiple Paratrooper ejection from plane.
I was thinking about this a while ago but never got the GWS C-130 to try it out. My idea was to tie a 12" string to each of the paratroops' leg. Then wrap the end of the string a few times around the next paratrooper in line. That way the paratroopers would be pulled out but the string would unravel quickly and they would come down individually. The first paratrooper would be held in by a rubber band and an extra servo arm. When the trigger was released, the first paratrooper would be shot out by the rubber band. The cargo door could be held by the same servo.
Don't know how well it would work. Unless the paratroopers weighed very little I'd worry about the CG. Probably not a big deal on the C-130 though.