I was checking out some other lego blogs (the brick fan) and they mentioned the up coming chima sets for the scorpion and spider tribes.. My initial thoughts from the artwork is that the heads of these guys will make excellent purist predator heads, take a look for yourself

 

http://www.thebrickfan.com/lego-legends-chima-scorpion-spider-minifigure-first-look/#sthash.oNEN8hgt