Some of it might be licensing issues getting the same properties again from Chaosium. Also, a lot of the monsters in the AP have been done as minis from the last few sets, just none of the uniques.
That said, I'd love to see a Father Charlatan, Aberrant Promethean, Adimarius Ionacu, and some of the other named, unique baddies.
I mean, I have the Blue Dracolich from DDM and Brinebones from Skull and Shackles, but I've love a custom Marrowgarth red Dracolich as a case incentive. The biggest problem with the set is that some of the more unique monsters are huge (Weaverworm, Aberrant Promethian, Dark Young), so if you had to pick one, it'd be hard to narrow it down.
According to Liz Courts, there are plans to do paper minis for Carrion Crown. I don't know WHEN those will be in the works. If you don't use paper minis, that news isn't much good to you. I'm hoping that they get started SOON!
I have not heard any plans regarding Wizkids minis for Carrion Crown.
Either pawns or paper minis would be lovely.
I made PaperMinis myself using Microsoft Visio and images from the Adventures or th Monster books, its a bit of work, but not TOOO much. Cant publish those (Copyright) but you can make them yourself with Microsoft Publisher for example.
They say that a good GM should do about two hours of game prep for every hour of game time, but I can never seem to keep my prep time down to anything remotely resembling those numbers. I cut corners where I can, and while I used to make my own paper minis I've stopped due to sheer lack of time. I just want to throw money at this problem and make it go away.