Congrats to everyone. A job well done!!! I agree this is a tough decision. Never seen a coin with this many quality entries, truly!
Here's my #1 (pentamon):
Sticking with a starfish design, not necessarily this coulour. The symmetry will make it easier to animate, when the time comes:

My #2 (boubonicnougz):
But it will need a transparent BG:

And my #3 (kusakka):
Some variant of this design, not necessarily this colour:

kind regards,
nio