This is a problem I encountered a while back working on EN. If you want to expand the generic minimugs, the game can’t actually read entries greater than 0x06. For whatever aethereal reason, it just won’t work. Which means the Etrurians can’t have their own unique generic icon. Ideally, I’d have one for each enemy faction, but the game can’t even display 0x07 (which it has a graphic for by default).
My generic minimugs in EN:
[spoiler=The Problem, in picture form]