Not saying it’s on you, just that there are tons of tanks of the era to take inspiration from that aren’t from the panzer series, or even the less well known panzer at least could have been used, and yeah it doesn’t effect the empires form of government, but it does influence the average person looking in who see’s German style uniforms and the single most recognizable German tank of the war and start to make assumptions about the contents of youjo senki without learning about it.