I'm all for it. Believe it or not, I've got some sketches of a personal coin and pathtag that I was working on with the central character being an armadillo. My project is on hold until I can sell a house though. However, I should still be able to get the pathtags done in July.
I always thought that the armadillo would make a good subject, b/c they're sort of cute and they have lots of interesting details (pig snout, plates on the shell, claws, etc.).
I'll be on the lookout for your coin!