Avatar Seven Havens will definitely open a door to more Hindi symbolism and a fix to the worldbuilding.

I was thinking this when watching TLOK, not only are Vaatu and Raava definitely reflectant of Yin and Yang. I also connected them to Vishnu and Shiva. As much as I love TLOK, the black and white painting of the spirits and chosing peace over chaos was definitely a hiccup to the whole balance aspect. I definitely see an opening for balance between the two spirits, esp with the twins.

Also Pavi can be a hindu name. So I'm expecting a great redeem worldbuilding wise.