I am big fan of Aamna Sharief (Kasish). There must be such a twist that Sujay mistakenly kills Kasish and he would regret. Meanwhile it should be disclosed after the leap that actually Kasish had a child from Sujal and had not disclosed it to anyone and that kid starts hating sujal for what he did to kasish by marrying gayathri.
Let me know of your opinions.