I've been re-reading ADWD for the first time, about 340 pages through. The book starts quite strong with a host of great moments and revelations. But I've been thinking about Dany's chapters mainly, and what went wrong. IMO she starts off ADWD well enough: the child's bones being presented to her, then Missandei's brother being murdered.
My question though: how would you guys have changed the Essos chapters to make them more interesting? General rule is that you can't change the end of Dany's arc; it still ends with the assassination attempt, controlling Drogo, and finding the dothraki.
So far the biggest thing I've noticed on the re-read is that a lot of awesome shit happens in Essos....but we don't see any of it on page. The Astapor king attacks the Yunkai army, Dany's envoys are killed, Dany's few ships are taken out as the river is blocked, etc. Some of that wouldn't be able to be seen on page due to a lack of POVs (ie Dany's envoys dying in cities we haven't seen yet), but others could have been done. We see the aftermath of the Astapor battle, and Quentyn recollects a lot of it...but it would have been far better to show the actual battle in a chapter. The chapter could end after the battle, with Quentyn seeing the dead body of Cleon with worms coming out of it (then in the next chapter explain that he had been dead for weeks, but the slaves had put armor on him and tied him to a horse to rally the troops).
Another thing: Dany tells Hizdahr that that if the city doesn't see a murder in 90 days and 90 nights she'll marry him. Instead of having him deliver his end of the bargain, I would have preferred if the city became even more violent, culminating a full on revolt. Shown from Barriston's POV, it would be an awesome look at guerrilla warfare. I'd have Hizdahr included in the battle, fighting alongside Barriston effectively; during this time he'd convince Barriston that he was trustworthy. After defeating the revolt, Dany would agree to marry him. Then you have the gladiator pit scene/assassination attempt, and Hizdahr showing his true colors. IMO that would be a far better way to get Dany and readers to trust him, than having him negotiate 90 days of peace; anyone would realize he had some type of involvement with the harpy....well except Dany apparently. It could also serve as another point of shame for Barriston, as he wondered whether his bad advice on Hizdahr led to him letting his guard down at the pit.