I wouldn’t make it too serious since it’s a internal culture. Whoever sees it could feel “gaming” and casual. The color is geek style as always, while the pattern is like a circuit just like some UI in cyberpunk world.
To avoid the cold color making people feel too cold, the union icon are designed as some philosophical totem by the symmetry element. Not only each image on card is different, but also the codebar at the bottom, which was translated from the english name.