(Via GeekTyrant) Took me a second to realize why no James Earl Jones.
The conceit here is that these are all the good guys — including Peter Cushing, who is clearly going to do a face-heel turn in the show and that’s the twist. Jones is playing an obvious villain, and they don’t get cast billing (or whatever the term is) in a show like Mission: Impossible, since it’s an ensemble show with a bad guy of the week. This is really a pretty clever conceit.