E. Use it as a counter
As I have mentioned in the introduction, Tani otoshi is a great counter for all hip throws, if you have the eye to see hip throws coming, you will be able to counter them easily with a Tani Otoshi.
When someone attempts a hip throw, they automatically give up the back, if you anticipate the throw, you will be able to move slightly to the side and counter with a perfect Tani otoshi.
In this example, the blue gi comptitor attempts an Uchi mata then the white gi competitor makes him pay for it with a beautiful Tani otoshi counter