I would have to say that this title is a touch drab.

You do be naming this not for another well known but for who do be the greatest of all time.

I speculate that this will in the end be a reference to shayol ghul or some other structure(s) in the blight. My reasoning is simple. We begin book 12 with a gathering storm in the blight with clouds of the deepest black streaked with silver as described by Renald Fanwar. These clouds are not in seanchan, they are in the blight and as indicated, but not stated, attempting to move southward. I suspect these towers of midnight will be found there. after all, who is to say that all of these towers are to be found in seanchan to begin with....