So whether Kaajjal dies or not is actually in our hands, because if we make a loud outcry about wanting to see Dev-Kaajjal in love, married, etc etc the writers will have to take the story in that angle.
Especially SONY is now trying to outbeat Kekta soaps so they will be very cautious about following any typical Kekta storyline and will prefer to see what the audience want and give a hatke type serial instead of the usual "kill-the heroine and torture the hero" stories.
They may add some twists and turns - but eventually the broad story will go the viewers choice way.
Already you will see that despite bringing in Dhruv as the triangle, the public (even on this forum) seems to want at least two or three lovey-dovey scenes between Kaajjal and Dev daily, and that's what we have been steadily getting!
So my argument is: let us make a very loud noise about what we wish to see (ie. more of love between Dev and Kaajjal everyday, and that we would like them to be united in love and taking on their enemies instead of being at loggerheads with each other!) - and although there will twists and turns and sub-plots, we will get mostly what we want!