Bravo Mith!
Actually, there is quite a good precedent for elements of such a story in the Easterlings' invasion of Hithlum following the disaster of the Nirnaeth Arnoediad, which forms the background for the stories of Turin and Tuor. Not being a regular RPG'er, I have no idea whether it would be suitable for an RPG, but it seems to me that it might provide the setting for an interesting story, either RPG or fan-fiction. Elements could include the struggles undergone by Morwen, Aerin's efforts to assist her (and conceal such efforts from her husband and his men) and Rian's sad story.
Anyway, just a suggestion ...