Great idea, Fullofit!
JJJ, I would suggest the difference in altitude between A and B flight be set a little higher: say 200 to 600 m instead of 50 to 100 m. Too close and they may wind up crashing into each other! Also, too low defeats the purpose of "top-cover," I think.
It would also be very cool if you could vary the distance in altitude from mission to mission, so that A flight is not always the exact same height above B flight.
Thanks!