Interesting post as usual, Ibrin. I have not read Tolkien's letters (I know, I know...
) and am just speculating about what makes sense to me. Whether the logic works, etc.
On that note, why bother with the curve? If the blessed realm was to become another plane or dimension, whatever you want to call it, why not just make it so where it stood? Surely it wouldn't matter to everyone else where it stood in
their plane. They couldn't reach it anyway.