I'm considering running Curse of the Crimson Throne starting at the end of July, but I've heard that leaving Korvosa rather muddies the later books. Council of Thieves, on the other hand, has ample opportunity for urban adventure, but is less favored as an Adventure Path. Thus, I'm considering taking pieces from each and combining them into a single urban adventure path set in Korvasa. What can I incorporate from Council of Thieves, specifically to fill more of the parts that bring the PCs out of Korvosa?
I haven't read most of them, but I have an idea of what happens in each. I'm far more familiar with Curse of the Crimson Throne, having played through the first two books as a player.
Ileosa's quest for power could certainly include bringing Korvosa under Cheliaxan rule in order to challenge Abrogail for the throne of Cheliax. This would allow for quite a bit of devil-related shenanigans.