As far as nations go they all look pretty great

As to the mouse and edge thing, I see where mouse is coming from with an entire corp of armored, self propelled guns, and torpedo bombers.

But also I see where edge comes in. 

My take on the whole thing is I'm sticking. between early 1800s-to late 1800s. (Cartridge guns) I suggest checking and making sure everything fits.

Those with swords and what not are behind the times or maybe they're taking on a more fantasy roll/last samurai.

If you have further problems make a pm with me in it

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Also that invitation is yo everyone even if you're not on the continent