As I said earlier also MK has borrowed from the mythology of Samudra Manthan. I feel the cleaning of Ganga is the symbolic Samudra Manthan. It is said that both Devas and Asuras were involved in Samudra Manthan.
So most probably Dr Rao's team as well as Greison's team will be involved in cleaning of Ganga. It is said that many treasures appreared when Samudra Manthan happened. Like the diamond Kausthumb, Goddess Lakshmi, The white horse and many more things and one way or other Devas took each of them.
So here also during Ganga cleaning many such valuable things will emerge. What they will be we will have to wait and see.
And then the serpent vasuki tired gives out the poison a drop of which can destroy the whole earth, which Shiva takes to save earth. And this is the most important point of the entire Samudra Manthan. Because if that poison was not taken at the right time the whole purpose of the Manthan was lost. Before Amrit it is the poison that comes and Amrit only comes in the end.
So I am so happy that script is taking into account even the minute aspects related to that mythological story.