Then take the Mad Monsters suit, dye it grey, sculpt a new head and give him a koyin...
Seriously, they should play it safe and go with Mummy, Drac, Frank and Werewolf. Classic monsters will always sell best.
If they follow the 2 big names/2 small names wave pattern, it won't sell. Funko, Sideshow, etc...have all tried it and the bigs never carry the small. Put the Witch Doctor or some other meh character in Wave 1 and Wave 2 will be a miracle.