Honestly I was already expecting that sort of ending because both Brandon Sanderson and Robert Jordan end books and series like that, not to mention it was already suggested that the final battle happened countless times before, so Shai'tan couldn't be killed. So the last book sort of satisfied me. But... I did not like those who were killed. I really wanted to see Perrin and Mat to go instead. Their very presence always remind me of the BS the whole ta'veren business was from the beginning - walking deus ex machinas.
Anyways... ah man. The Wheel of Time. World's finest example of Alan Wake's words that a story can become like a living being and sometimes can out of control. Look how the first book lasted for months, the seventh two weeks and the tenth happened before the ninth. This should have been ten books at most... the way it prolonged itself and got lost on sideplots really detracted from the story.
