I don't really know if that could be feasible, but, conceptually speaking, I think that the purpose of this typology of features (I call it malus) is exactly the one of turning out to be a quite nasty hindrance to cope with. Just think about Mordor: it's quite imperative that they be compelled by necessity to make usage of such feature (Nazgûl, in particular), in order to make up for the faction's lack of heavy troops and upgrades; they thus rely on other types of possibilities, often connected with some magical/supernatural properties, which are really fitting in that environment. Only in this logic is everything eventually compensated.