I've had to bring up a couple more points since my re-read is finished.
With the whole Seanchan prophecy, it's pretty convoluted.
Because Rand heard from the Aelfinn that he must have the North and East united, and the South and West united to win the Last Battle. And the Seanchan have a version of the Karaethon Cycle where the Dragon Reborn must kneel before the Crystal Throne. That could be metaphorical as the Empress, and with her having been assassinated by Semirhage (Or indirectly at least as she insinuated to Suroth), that makes Tuon empress, so perhaps that could be a binding of her marriage through Mat, or him giving them the lands of the South and West.
And another one that bugged me, and this may be a *little* off-topic, but I come back to Taim again.
I think perhaps there will be a rift in the Black Tower when the last battle comes, and I have even more reason to believe Taim is a darkfriend.
At the end of Knife of Dreams, in the Epilogue its a point of view from the red sister (Perava?) and she and a group of reds are meeting Taim to discuss the bonding of Asha'man. One of the last lines in the book is: "Let the lord of chaos rule." which is said, by Taim.
Now, the only time I have ever heard that line (or recall hearing it) is from the Forsaken or them telling it to darkfriends specifically.
I think that about cements him being a darkfriend, because he says: "Remember the old saying, let the lord of chaos rule." And Pevara thinks that she had never heard a saying like that.
I think Taim must be a darkfriend, and in the rift of the Black Tower, Logain kills him and assumes command of the Asha'man, which will be what his crown signifies in Min's viewing.