Some forms could be a dragon, turtle, wolf, panda, mouse, parrot/bird.
Some new maps could be a replica of big top but instead of a giant tent it could be replaced by a volcano
Another could be an Atlantis type map that is underwater and has a castle in the middle (like big top)
The last one is for form ball and it could be a race car track with cars going around and people playing in the middle field (or a football field)
Hope you like these ideas