Hi,
I wouldn't want to interfere in the US private affairs, but, Hotz, when you see how difficult it is to find a consensus on a person, I personally prefer the polar bear and the great blue whale.
Commemorating the past is important, but committing for the future is maybe way more important for our children.
My two (Euro's) cents
Christophe



PS : in Europe, the consensus has been found with architecture:

But on coins, there are human faces, mostly kings and queens (maybe you miss a monarchy in the US ?), and for France we have the symbols of the republic.