Ok, so I followed your suggestion to take Empire Flags instead of the normal standard bearer and I really like it. I think I will paint it in some kind of empire heraldry like thing but with rats and runes instead of griffons and texts about Karl Franz and sigmar. So it will be debased but perhaps not like a big X over an empire helarldry. that feels too Orky.
Hope you like it and C&C is welcome!