When Africans were brought here as slaves, they did not have names.
When they were freed, they usually took the names of their masters.
When a reparations seeker applies, it'd be relatively easy
to track down the heirs of the masters......and make them pay.
They had names just first names. By the way Europeans with two names where the surname was passed to the next generation was roughly 16th-17th century phenomenon. Prior to that and until the custom died out your surname might be your occupation, where you were from or copy\identify with the local lord. With the rise of non-nobles having property (Rise of the middle class!) the need for uniquely identifiable names were necessary for inheritance for this class of people. Surnames had to go down from father to son, etc. (Nobles already had family names!) Some European nations like the Scandinavians lagged behind all that. There the father’s first name was incorporated into the son or daughter’s surname. So, for blacks having first names then adopting either locale or master’s names isn’t that different from the European experience and doesn’t differ that much in time.
As you know, the civil war was the first great reset. At the end of it, the “masters” had little to bequeath to their heirs, perhaps some rubble. So what you’re saying is you want the fourth-, fifth- or sixth-generation descendants of the “masters” to pay, who did not own slaves and did not inherit any slave-produced wealth. Your solution is no better than any other unjust idea out there, and the most likely outcome is this alligator is coming for everyone.