I'm assuming that's what OP means. An Aldrin cycler is a cool idea and I'd love to see one developed some day, but I don't see how it helps unmanned missions significantly. You still need to independently launch and accelerate whatever you want to send to the same orbit for the rendezvous.
Makes sense for creature comforts (like life support and radiation shielding) for the long cruise but why bother for a robotic mission?
If you're meeting the cycler in its orbit, you're already on a free return trajectory back to Earth by definition. You need another burn if you want to stop at Mars and another burn after that to leave and get back on a trajectory to Earth. In any event, you need to bring all of that propellant one way or another through some combination of independent launches. I'm still not seeing what a rendezvous with the cycler craft is doing for an unmanned mission. Any delta-v you take from the cycler has to be put back via refueling or reboosting at some point or another.