Nice idea - use something like AutoPilot - and a saved mission, that can be re used like - TARGET or ZIP-LINE - but there will be slight changes in position as the gps can be 1-2metre or so out.
I'm currently using litchi to film the progress of the build of our new house. Using the same gps mission every time to fly around the buildsite. If the house is finished I'll edit all the clips to view the build in timelapse.