1. More girls in tubes/tanks.
2. Dominance/submission scenes.
3. Fantasy and sci-fi (with more than a hint of Dominance/submission, bondage, and/or transformation).
4. Donkey girls, maybe pulling carts, maybe smoking marijuana at a Pleasure-Island style resort.
5. Pig girls, maybe dressed for work at a barbecue restaurant.
There are a few for you. Some are probably impossibly general/vague. Others may be so specific as to be no fun.