Kunj wouldve been a focus after Twinkle giving him the rights of a husband completely and all that lovely jazz. if Sid hadn't left we would've seen an insecure and frustrated kunj who would've left Twinkle because of one misunderstanding and i think the plastic surgery thing would definitely explore the complexities and the underlying decisions of him leaving Twinkle to her supposed happiness.
Kunj's character was the most brilliant and most consistent character. I agree. Writers and Sid both did a half assed job with understanding the impact of this brillinat charcter they brought to life.
yeah if sid didn't leave the track was focusing on highlighting the intensity of kunj's character and character development
the new actor is going to get a lot of room for trying new things with the way writers are going to go about taking kunj's character
for sure, both of them didn't realize the true impact of the character of kunj - there is just so much that could have been played around with