there are SO many characaters missing in kyunki... ive made a creative reasoning as to what MIGHT have happened to them...
Himmat, JD, Daksha, Gayatri, Pragya -died soon after Savita due to old age and sicknesses. (Think of it, these people were 20 years older then Tulsi and Mihir!)
Hemant, Pooja and Tarun-Hemant and Pooja got disgusted with Sahil and they way he went against their values and married Tripti. In addition, they got sick of the regular fights in the family and the way Sahil got the business split. Hence, they moved to America with Tarun, and today they are settled there away from the family and Tarun has a wife and kids of his own.
Chirag, Prajastha, Saanwari and Baanwari-Chirag was NEVER involved in the business anyway due to his acting career. So he continued to live in the house but ultimately moved out due to his irritation with what was going on. He lives in Bombay and visits the family but doesnt live with them. He never needed the business anyway due to his acting career. Today, Saanwari and Baanwari have kids of their own that are pre-teens and teenagers.
Anand, Sejal, Indu and Deepak-Indu went back to Ahmedabad (where Sejal lives) as her college got done. There, she got married to someone. Deepak also married someone. They both have their families. Very often, they all come and visit Shantiniketan, primarily for Baa.
Suhasi, Rakesh, Aniket, and Tusshar-After Tusshar, Aniket also got married (its kinda funyn that tushar got married first, since aniket it the older kid!...lol, maybe his kundali said that he would have to get married at a certain time, after his younger brother). They live in Bombay with their families and their parents... but of course not in Shantinketan, they never lived there anyway.
Kiran-Kiran intially worked on Gautam and Karan's side in the business, but he too got sick of the nonsense and moved back to Australia.
Shobha, Payal, Urvashi, Pari, and Pushkar-After divorcing her husband, Shobha continued to live with Payal in delhi. Payal's daughter Urvashi also got married to some guy. Today, Shobha still lives with Payal and she has become a part-time politician. Her son Pushkar handles the business after her.
Kesar, Anupam-Kesar and Anupam still live in Bombay. There three daughters (Lajja, Aparna, Shweta) are happily married with their own families.
Karishma-She also still lives in Bombay with her husband Shantanu and has kids of her own. She visits Shantiniketan as well and also visits Australia to meet her Dad (kiran).