Strange's villains should be great once they are interpreted to screen. I think he has one of the more under rated rouges galleries within Marvel. A nice solid tier system of good big bads, solid secondary threats, and large factions to fight Main villains Dormammu Mephisto Mordo Nightmare These guys could be secondary ones most likely D'spayre Cthon Satannish Titannus (once skrulls are introduced) Cyrus Black (or the dozens of other sorcerers there are) Bloodaxe Then you have The Mindless Ones, The N'Garai, and Possessors who could all be a large faction to fight. And of course Lilith, Morbius, and/or Dracula if they want to have Vampires too. But I'm not sure if they will open up the Vampire stuff. But if they did it would pretty naturally open up a Blade tv show opputunity, hopefully to set that all up. Not sure how they'd handle something like Shuma-Gorath.