Additional Voices

Who do you think should voice characters from the books that didn't appear in this movie?
Here's my list (I listed Coll and Dallben separately cause they were combined in the movie):
Prince Gwydion-Kevin Bacon
Dallben-?
Coll-?
Kaw-Will Ryan
Adaon-Peter Strauss
Prince Ellidyr-Mark Hamill
Prince Rhun-Nathan Lane
King Smoit-John Goodman
Gwystyl-Rob Paulson
Glew-Rob Paulson
Llassar-Wil Wheaten
Medwyn-Michael Gough
Craddoc-Kenneth Mars
Annlaw-Pat Hingle
King Math-David Carradine
Arawn-Tony Jay
Achren-Suzanne Pleshette
King Pryderi-Jonathan Harris
King Morgant-Paul Shenar
Dorath-Jeremy Irons
Magg-Gilbert Gottfried
Morda-Mercedes McCambridge