Attached to Del Toro were some of his mainstays. Namely Ron Perlman and Doug Jones, who both look like they could fit right into the LOTR universe. But I think with Del Toro's departure, they also dropped their names from the project. Probably not a huge loss, but I do love me that Perlman and his sexy caveman brow.
Howard Shore will also be back to compose the score, reprising the major themes from LOTR and penning some new ones.
And of course, dear ol' Gandalf...
Stephen Fry and Brian Blessed are also involved in the film.