OK, I went with a different tack this time. Try:
Version 0.02
This Version has a white shield with a vaguely appropriate (I hope) symbol. I think this looks decent, but rather than a symbol on a common white shield, the shield color (and shape) should be varied to give it more instant recognition. I suspect that the white shields will tend to blur together after a while.
True gaming geeks will recognize the majority of the symbols as old Warhammer 40K symbols. Ironically, I used a 40K font I created 12 years back. Oh, the great wheel turns...