I feel like India would be slightly redundant considering how much it seems like the Asia area of DAK is based on India and Australia also seems more suited for DAK, as it would be another continent to add to the park (Yes, I know it's a country too).
Regarding India, I feel like that is kinda true, though it would be nice if the Asia part of DAK had a proper Indian restaurant. Yak and Yeti has some Indian items, but is more East Asian.
I think, however, both India and Australia could work in both DAK and Epcot with totally different thrusts for each. DAK is about animals and nature, while Epcot is about man's cultural achievements.