While I agree that the artwork doesn't necessarily look too polished, I find the design interesting -
The Great Northern Empire's design has two rings which interlock, while the Ravenskill Rebel Militia's logo is in an "x" shape or a starfish shape. If you superimpose them on top of each other, they roughly form the shape of the Majesty symbol.
Also, The Great Northern Empire looks fantasy themed (and has a fancy cursive font in the email dialogue box), while the Ravenskill Rebel Militia's aesthetic seems more futuristic (with a more computer-like front in the email dialogue box).