But so are rehashes and endless sequels. There are tons of SciFi Books that have never been tapped for their great stories and characters. Ringworld, A Mote in Gods Eye, Rendezvous with Rama...and a bazillion more. Also after Game of Thrones I could see the possibility of doing some mini series like Anne McCaffrey's Dragon Riders of Pern books.
+1
Like your list, as those where all good books.
However, I have little faith in Hollywood producing a good movie from any of them.