Could be possible.
As of now I am going with Shagun being -ve coz she acts like a psycho... But I really want her to be grey. Like I don't want her to evil. I hope she does come to her senses before things get out of hand.
Coz Shaagun is Devi's wagon. Uske bina Devi will be handicapped.
You know the way she said one dialogue today ki something on these lines ki woh anokhi se pyaar karta hai mujhse nahi (don't remember exactly),
means that she knows Shaurya loves anokhi and woh usme shagun ko nahi dhoondh raha. She also said woh bachha nahi hai. That he is aware of what he is doing.
So, she knows she will get nothing out of this wedding but she is acting psycho in front of Devil liks Shaurya is a trophy for her, to keep devi desilusioned and in order to use her till Anokhi leaves Shaurya. She wants Shaurya to suffer.
If they show shagun to be pure evil then the show it would be like typical ITV. Till now most of their tracks have made sense and not been senseless like all other itv shows.