From observation I believe that the moons of mars may provide a landing and lift off platform . The moon Deimos is near to geosynchronous orbit and drops a tether to dangle over the orbit of Phobos above the surface of mars . From Phobos a shoe swing is tethered out and dropped onto mars as Phobos passes overhead . A gentle braking on the tether reel lifts the shoe into flight and lift as the tether is reeled back . On a later orbital pass below Deimos the shoe casts its load to rendezvous with the elevator dangling above . Of course this infrastructure is long term and most feasible to construct through space drones and robots and requires some spin corrections on the moons . I am sure many more hurdles remain but could it work ?