Del toro has talked in the past about his love of the family horror genre. IE those 80's family films like disney used to do. something wicked this way comes, Mr Boogedy, etc. and wanted them to make a come back. I think Maurice would be perfect for him. maybe even the Tiffany Books.
Though I loved the idea of Sam Raimi doing the tiffany books. shame that fell through.
Peter, would be the goto though for alot of it. but he can do dark comedy as well, if anyone remember The Frighteners.
I can see Nolan taking on the Watch books. he has a very down to earth style and the Watch books are generally the most grounded.
"The reason an author needs to know the rules of grammar isn't so he or she never breaks them, but so the author knows how to break them."