Nice, clean coin. I REALLY like it! what about the whole blue center being a cut-out, then filled with translucent blue with the gold globe sandwiched inbetween the resin layers... visible hologram-like from both sides... kinda like the dragonfly here:
http://www.aetoys.com/geocoins.htm
maybe rim the blue center with a gold ring...
this has sooo many way cool possibilities... just don't give up on the clean, minimalistic style. In this case, less is probably more.