(re: Why wasn’t Space Quest 5 a CD game?)
Correct me if I’m wrong, but I believe the version of SQ5 released in the Space Quest Collector’s Edition (the very first one, released in 1994 in the blue box) did in fact have voices; the collection was released only about a year after SQ5. I seem to very clearly remember the narrator reading the line, “My, what a wonderful smell you’ve discovered” when you open the door in the ship and dump garbage all over the floor. Perhaps Sierra decided to focus on the Collector’s Edition and put the voice version of the game in that, since it was released so quickly.