Why no Vault Keeper or Old Witch in this show?

Wouldn't it have been cool to see the Crypt Keeper interacting with the other two "Ghoulunatics", the Vault Keeper (from the Vault of Horror comics) and the Old Witch (from the Haunt of Fear comics)? The three horror hosts from the EC comics of the 50's (which inspired this show) could have taken turns introducing each episode, telling the stories, and making jokes along the way, as well as arguing with eachother and whatnot.

All three of them appeared in the original Tales From the Crypt comics, as well as the two sister publications mentioned above so why not in this series? At least they were in the Tales From the Cryptkeeper animated spinoff and done very well, but would have been cool to see live action versions with a more adult tone. Hell, the Vault Keeper wasn't even in the 1973 Vault of Horror movie by Amicus Productions, despite the Crypt Keeper being present in the preceding 1972 Tales From the Crypt film.

The Crypt Keeper has been well represented in the various adapted media outside the comics, so why do the other two always get the short shaft?