I beg to differ with you Appy. I don't think the show is losing its essence at all. This is only one party, and Rudra being a BSD officer is bound to attend similar parties. It's a part of his professional life. Once this is over, they will go back to their home where everything is essentially Rajasthani. Paro will eventually have to adapt to a few things...but that not's a bad thing. Just because she is becoming slightly more polished doesn't mean she is letting go of her culture.
The purpose of this was not to change the backdrop of the show, but to bring Parud closer and to show how Rudra will be there for Paro in each and every step. That was the whole point of dance. I agree that the dance looked all flawless, without Paro faltering at all...but I guess it was symbolic in that way.
And anyway, the dance was very beautiful...so I am not going to complain... and I really like this track.