Ah, the Dark Lands. That inescapably vague continent lacking in lore, but so infuriatingly present! What is to be done about it?

In short, it should be added, but only for the sake of a canon place being added. Literally, there is mostly nothing there.

Benefits:

Just a nice place to get away from everything. The way you would get there would to either sail, or fast-travel to a waypoint of some ancient Numenorean ruins.

Yellow Mountains: Some yellow building materials.

If I wanted to go really, really extrapolative, I could recommend some factions, like Numenorean descendents or tribesmen based on Pacific Islanders or Australien Aborigines.

But I won't. That is for people far more desperate than I. Even if we added factions, what would they do, join or fight Sauron? No, they would be just too remote.

Ents in the jungles, maybe, but nothing else.

The Southern Cold, maybe? Black Numenoreans! Maybe you could only learn the location of this place from them, like not being on the map in the first place? (Screw Fog of War, the Meneltarma strategy is better.)

Adding the Dark Lands is different than the Lands of the Sun, which seemed to have dissapeared in the Third Age, or the New Lands, which we don't have any map of.

Thoughts?