Think the writers need to have a look at this and decide what their characterization of Radha has been till now and what it is going to be in th future and in what direction the story needs to go forward.
Shabir can overcome all their drawbacks by his realistic and splendid performances and Rheeza might also add in, but still the basic story should be formulated on all angles to move forward on a long-term basis.
Initially, thought the co-casts had no potential but all are really good, if proper screen space be given to all of them regularly including the ghost, then it would be more interesting and the story can widen appreciably,