This is a wonderful reinterpretation of the existing "facts" in Middle-Earth, and I'm very glad that it's trending on Hacker News some time after I used it in an RPG, to great effect.
There are rather a lot of hidden depths one can mine out of Middle-Earth, often in directions its creator would probably not have approved of.
Along similar lines, for example, if you cross-reference the location of Nan Dungortheb, the Valley of Dreadful Death which is the last known location of Ungoliant, with the Third-Age map of Middle Earth, you discover that it's just a short way off the coast of the Western edge of Middle-Earth, more or less in a direct line between the Grey Havens and Valinor.
Which does present an alternative, less happy hypothesis about what happens to all the elves after they set sail for the Western Shore, and in turn begs the question of why exactly they're being compelled to do so...
There are rather a lot of hidden depths one can mine out of Middle-Earth, often in directions its creator would probably not have approved of.
Along similar lines, for example, if you cross-reference the location of Nan Dungortheb, the Valley of Dreadful Death which is the last known location of Ungoliant, with the Third-Age map of Middle Earth, you discover that it's just a short way off the coast of the Western edge of Middle-Earth, more or less in a direct line between the Grey Havens and Valinor.
Which does present an alternative, less happy hypothesis about what happens to all the elves after they set sail for the Western Shore, and in turn begs the question of why exactly they're being compelled to do so...