is it just me???
I'm not so sure taking the time (or risk) of retrieving the fast rope is such a good idea. First, the aircraft is on station longer (exposure); the possibility of the rope bag turning into a sail and going straight up into the rotor system; the delay in getting all your assets on the ground as the second helicopter is waiting to insert.
Just drop the rope and have one of the troopers drag it aside so the next insertion of troops doesn't get caught up in it, and recover it upon completion of the mission.