Moridin isn't a dupe - he's the only Forsaken who understands what the DO's victory will mean, and he really wants it. He wants the destruction of everything, and most of all, he is tired of being spun out to fight Lews Therin over and over again. Before the DO was released he wrote books like the "absence of meaning" and when he turned he called for the destruction of the Pattern. Moridin wants the Pattern to be annihilated down to the smallest detail, and he is furious that the DO brought him back. He wants the final death, but nothing he does allows him to achieve it, and he's really upset about it.

As for the Forsaken, I would agree with you about Graendal. She has been such a massive success in the series as a villain. She was hugely impressive in the Last Battle, with the way she devastated the Light's generals, and also fought on a personal level standing her ground against so many of the Light's strongest women at the same time. Graendal is all over the book - she's like a virus.

I don't really agree about Demandred. I thought he was spectacular. He was intelligent, a master tactician and probably the best channelers we have seen in the series (he probably killed hundreds of thousands of people single handedly using Sarkenen). He's fantastic, and the way he beat up Taim, utterly humilated Logain, killed Gawyn and disfigured Galad was pure class. I know many people were disappointed in Demandred and his Shara revelation but I thought it was excellent, and I enjoyed all his scenes. I liked his showdown with Lan and his demise was fitting and plausible. Too bad he'd been driven insane by his hatred of Lews Therin (he could practically not think of anything else).

Cyndane was interesting too, and more subtle than Graendal, which was surprising. I enjoyed her a lot, and Moghedien was amusing as always. She's just the cutest little thing to see scurrying around, and how she takes advantage of things for a few minutes before being beaten up again.