Terisonen wrote:A black Numenorean will not fit very well with a Noldo or even an Elf. Mixed adventuring between Rohirrim and men of Gondor seems easy for they have strong bond between each other. And you can imagine that Gondor always have an eye of what happen in the wild, keeping track as much as they could from Easterling, even if Ithilien is much of interest to her.
I do like the idea that even an 'evil' culture (or perhaps that should be "a culture allied with Evil) can produce Heroes of good conscience who could rebel against Evil. I just don't know how such characters would work with the mechanics of TOR. I don't think that we can expect official write-ups for such cultures as 
Easterlings, 
Black Númenóreans, 
Dunlendings, 
Corsairs, 
Haradrim, or 
Variag Men.
On the other hand, would there be interest in a supplement devoted to Heroes from Variant Cultures? Besides the above, it could include other options that would otherwise be ignored such as the 
Lossoth and the 
Woses. Perhaps even 
Half-orcs could be included. This would also have the benefit of having all of these variants in a single volume that is easily ignored by those not interested in them.
EDIT:  Well, I was certainly wrong about the 
Dunlendings as they are an Heroic Culture in 
Horse-lords of Rohan.  I imagine we might eventually see something similar for the 
Haradrim  and/or some faction(s) of the 
Easterlings.