I’d also want to see how well the batteries handle a hard but survivable landing or controlled autorotor ground stop (and bounce).
The Huey of Vietnam had one rotor, one engine, two pilots and a tail rotor. In effect 4 points of potential failure. It was a magnificent machine that brought many wounded boys home and at the same time much sacrifice to those brave pilots, crew and wounded. Those pilots were angels and brave with a mission they could not deny.