Oooh, I think the dragon head would make a much better icon!
We are still working on icon, the dragon claw with our signature shield is going to be consist with each coin. That was initional thought on icon reasoning.
I think you should stick with your original idea, since it is the constant that binds the series together.
With this knowledge in mind, I take back my previous comment about using the dragon head. Yes, stick with your original idea. It's your signature!