I would like to be able to "snapshot" the PMC, and have that overlaid on the current PMC, so that I can compare the PMC trajectory (e.g. Fitness) between the snapshot date and the current date. The main use case I can think of here is a planned PMC, which is mainly future looking after a training plan has been created and initially delivered to an athlete, and then an "actual" PMC, which is the PMC realized by the athlete.