Royal successions are based on who is related to whom in which way. Presumably in the biological way. Since most rules for successions are not based on maternal, like for instance the much more pragmatic jewish faith, it could be interesting to back up the pedigree with actual genetic evidence. Something that could have been done since decades. Given how easy it has become it is surprising that no tabloid has gone there yet to offer proof about certain differences between the official story and the actual relationships. I wonder if there efforts on the way to protect the genetic information of people in royal families.
There are stories that latest North Korean Kim makes efforts that the output of his body remains under his control. What a strange job: Honeyboy to the dictator.
It is probably possible to go back in time as well. There are probably a couple of relics that have traces of DNA. Once Corona is in the past we have allot of PCR capacity that is sitting around. I wonder how cheap these machines will become.