Dday....I think I've seen your site before. Nice work.
Yeah the Krupp is nice for it's vintage. I built the original personnel carrier version when it was first produced in the 70's (showing my age again).
As for the badge, I like it as is, but if you want symmetry, the wheel needs to be positioned centrally in the badge. This will also mean that the barrel and trailing legs will need to be the same length. Another option is to have the gun barrel raised more, then insert a small 'O4" or '2004' vertically in front of the field piece. This will balance out the sit of the gun components.
Nice work so far guys. Enjoying some catch up in the forum posts, and the pics have my fingers getting itchy to start my own.