It appears that Kenya has some something surprisingly sane: it has decided to remove portraits of real people, especially politicians, from its currency.
At one time, policy in the United States was quite similar; anthropomorphic representations of abstract concepts (like “liberty”) were the only human images permitted on government produced money. Then, slowly, the inevitable happened, and politicians began to be deified by putting the likes of Abraham Lincoln, Andrew Jackson, and the rest on coins and bills.
I think the notion that senior politicians are not, in fact, kings and emperors, and ought not be the subject of secular worship, remembered with expensive public memorials, put onto money, have bridges and airports named after them, etc., is a rational one, and I hope that it someday becomes much more widespread.