Kenny, you can't call it a CL 99 Mary Bussey. It'd have to be either Mother Fluff or get a new name, like Big Mama.
Now, it's a bit cliché, but I want to see representations of the "Four gods." Not necessarily named Byakko, Genbu, Seiryu, and Suzaku; just Animated with that general look. The big question here is, what might Animate and take on those powers?
Also Epic Lawnshark. New event monster that appears after the three regular ones go down. It's a return to the old school power of the original Lawnsharks before their nerf. You wouldn't have to defeat it to win the event, but it's worth bonus points.