Board Thread:Suggestions forum/@comment-26429944-20180208085334/@comment-26298013-20180212184935

No Dunedain-like (incredibly long-lived and greater than average Men) "high-blooded" Black Numenoreans still remain in a large group. This is made clear in canon.

HOWEVER, the high blood of Tolkien's writings is not entirely based on inheritance. Aragorn inherited the faded blood of Numenor, its glory spent, and could expect a life far stronger, but not terribly much longer, than the life of an ordinary Man. Instead, he lived to thrice the age of an ordinary Man, having "rekindled" the blood of Numenor in both him and his people. Furthermore, of Denethor it is said that "whatever his descent from father to son, by some chance the blood of Westernesse runs nearly true in him; as it does in his other son, Faramir, and yet did not in Boromir". This statement makes it clear that the "blood of Westernesse" can spring up almost randomly, and not necessarily (though far more often) in those who are Good. So there is some wiggle room for Mevans to add them, perhaps as elites or officer-types in a few evil factions.

Or he COULD just do what DAC2.0 is doing for Third Age: Total War, and just add Castamir's Faithful/a completely Black Numenorean faction that has just showed up and taken over Umbar, because Westernesse.