I feel some items mentioned below if invoked in current story line will not just grab viewers interest for couple of weeks but will also sustain their attention for a longer time even without too much dependency on TRP stunts or fake filler dramas as the story will move ahead even minutely from its current stagnation point. Sep till now Abhi-Nikitha story is stuck with boss - secretary/friend not giving any inclination to viewers that it may culminate into a love story.
- Abhi has to get his memory back and he has to have a gripping revenge Taaliyakhil track, (may not happen so soon)
- or he has to cancel his wedding to Tanu after understanding he took a wrong decision,
- or he has to realize he is in love with Nikitha and she is not just a mere friend or staff, 
- or he needs to know truth that he has been married before his ML and start search for his wife,
- or he has to know that Nikitha is Pragya Mehra his legally married wife and love of his life,
- or he has to know that he was in love with a girl called Fuggi in his past and search for her,
- or Taaliya's new evil deeds in this ML track need to be exposed to him,
- or his family needs to be shown making serious attempts for treating his ML,
- or Pragya needs to plan and take revenge from Taaliyakhil without impacting Abhi's health,
- or she has to attempt and make Abhi fall in love with her again to strengthen her position,
- or she has to expose publicly how Taaliya have defamed Nikitha repeatedly,
- or she has to make Abhi realize Tanu is unfit for his family so that he cancels his wedding forever,
- or she has to conspire with others to postpone Tanu's wedding with some lame excuse,
- or she has to slowly make Abhi get back his lost memories by recreating past situations,
- or she has to smartly plot to make Abhi lose trust on his beloved sister Aliya to keep her at bay,
- or she hast to suddenly get married to Abhi again by manipulating him with the help of oldies,
- or she has to use Aliya's obsession for Purab in a wise manner to control her evil actions,
- or she has to publicize Nikhil's affair against Tanu by getting her defensive and helpless,
- or she has to plot and split Taaliya and pit them against each other 
Did I miss any other items that can make KKB gripping in this ML track?
In summary the leads have to be shown in some action either working together or working separately for a daily soap to sustain its popularity and also ratings. Both the leads of KKB have NOT been in action last few months in a true sense as they are more on back seat that could be main reason the show doesn't excite much or offer some believable scenes with light hearted humor which was once its trademark.
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