Well, to answer that, first you need to know where they came from.
Some descendants of Emperors never get purified of the genes that are "not fit for public distribution". If those families can organize and accept a set of precautions they are assigned rolls and titles and responsabilities.
However, by the mid 1800's most of them had broken the rules and there was no longer any difference between many common japanese and the samurai, being as they shared many of the same parents. So the whole premise of what they were had desolved. Though you could dig up some hot spots and blow on some embers, it would have been a new thing. And when we figure it out, we will let you know.
