The Savage Land is one of the really interesting concepts within the X-Men stories that I'd love to see on film & the beauty of it is that you could use it in several different ways for storytelling purposes. If the main antagonist is Magneto you can utilize the Savage Land Mutates as a foil to the X-Men, or you could use Sauron as the main baddie.
Originally Posted by psylockolussus
Sure why not. But I don't really want to see Kazar in a X-Men movie.
I wouldn't mind seeing Ka-Zar at some point, but it does seem that he would be somewhat out of place in an X-Men franchise - if the Savage Land were a part of the larger MCU then introducing Ka-Zar would make a lot of sense due to his ties to other characters as well... except X-Men is produced by Fox so using the Savage Land as a go-between other Marvel characters is out of the question.
In addition to the Savage Land, it'd be fun to see things like Asteroid M, Shi'ar Empire/Starjammers, Genosha, Age of Apocalypse... you get the point, there's tons of stories that could be told on screen.