>>18968342Going by real world logic, I'd assume it's something like why you still see single engine fighter jets today despite twin engine jets being generally superior. The extra cameras of Gundam-type suits offers greater visibility, but the Zaku camera's aren't so far behind as to be a major hindrance. So they save a ton on manufacturing/repair costs (one expensive camera/sensor equipment versus two) and can use the same stuff they were already using for mono-eyes.
Obviously it's really just because mono-eyes look cool, but that's not as fun...