Sci-Fi Classics: Out of the vault and onto DVD?

Universal has given us the Legacy DVD collections of Frankenstein, Dracula, the Mummy, Invisible Man, Creature from the Black Lagoon, the Wolf Man and (more recently) Bela Lugosi and Hammer Horror. So, why not a Legacy DVD collection of Universal's sci-fi classics from the 1950s? Titles could include THE INCREDIBLE SHRINKING MAN, THIS ISLAND EARTH, TARANTULA, DEADLY MANTIS, LAND UNKOWN, MONSTER ON CAMPUS, LEECH WOMAN, THE MOLE PEOPLE, CULT OF THE COBRA and MONOLITH MONSTERS. (IT CAME FROM OUTER SPACE has already been given a deluxe DVD release, with some excellent extras.) I know some of these are not technically Sci-Fi, but Universal previously packaged them as their "Golden Age of Sci-Fi Collection" on VHS.