Engineers are testing ways to get the rotors to start spinning with drop tests in the VAB. With the scale model capsule suspended 480 feet above the floor, engineers can use a helicopter radio-control unit to remotely changed the rotors' pitch and slow the capsule's fall.
Rotors could help recover spent rocket stages as well as spacecraft. The idea is to have rotors built into the booster frame and unfurled as the stage descends to Earth, the empty rocket just as controllable as a spacecraft for a soft landing. NASA considered this in the 1960s as well, but like the Apollo rotor reentry it never got further than the planning stages.
Future rotor reentry test will get more complicated, eventually involving full-scale models dropped from high-altitude balloons. And before rotors bring astronauts back to Earth, the system will bring science samples to a soft landing from the ISS in small scale capsules. Some hope that this capability of sample return will give the rotor reentry system a niche, though where this will fit with possible SpaceX Dragon capsules returning hardware from orbit isn't totally clear. One this is sure, it would be really neat to watch a rotor reentry from orbit.