Yaah this seems like a good thought....but I hope they don't show Sahiba falling for Diljeet, then Diljeet's dying, and then her reuniting with Angad. That would be soo weird.
To be honest, I don't think they'll show Diljeet passing away as a good man. Everything indicates he will turn hostile towards Akir. Even when he is entirely at fault, Angad escapes repercussions, therefore I doubt they will subject him to the pain of being accused of something he did not intentionally cause ,in the eyes of someone he genuinely loves.
I have no idea how folks are getting the idea that heroine will fall in love with one man and then go back to her abusive ex husband after his death. After Naira died, I gave up on watching Yeh Rishta, but since the next generation was about Naira's daughter, I followed it occasionally. This forum's version of what happened differs significantly from the actual version.