My fantasy is that we get over the dead-President theme and go back to figural Liberty obverses and naturalistic Eagle reverses. I'm partial to St. Gaudens and Weinman's work, but I'd be happy with a more stylized approach like Carr's. Just no more staring-man obverses and flat, road-kill eagle reverses, please. Come to think of it, let's adjust the face value and start circulating ASEs and AGEs!
The gold buffalo proof has everything I want in a fantasy coin. I just need a fantasy paycheck so I can afford one!