Harriman and Demora are taken care of, unless you want to be kind of perverse and do your own mental casting of them
As for everyone else, I can offer you this: people who've read these threads before may remember that my visual template for the younger Elias Vaughn is an actor who has been on Law & Order
named Philip Casnof
Your mileage may vary.
That's a great, great novel. Savor it.