An antagonist completes a story -- I am with you on that. But obsessing after "I want Khushi" is not enough to invoke homicidal tendencies. Unless, he was homicidal to begin with. But we don't know that. Did he fall out of love with Anjali or was he never in love (he did hint at the latter). So why did he marry her? For the money (he shares the accommodation but not the business - *flag*), or to settle scores from a connected past? We don't know that either. We know how far he can go to get what he wants but did he just turn into a psychopath or was he one already?? Again, we don't know that.
Please, we need to understand his motivation, his history for his actions to make sense. I am sure you had a vision for this character but your vision got blocked by the TRP chart. So re-align your focus and we don't mind a Kaalia but please give him a purpose!!! Please know that even Kaalia is iconic with his famous last words "sardar, woh do the"!!!
And while we are at it, we would like
1) to know about Laxmi's past, present and future
2) Is Om Prakash coming back
3) How do all rooms on all levels connect to the same pool/pond/puddle
4) How many rooms does GH actually have
And ofcourse, please don't forget about Arnav's past!
Gabbar at his best with a hair raising background score
[YOUTUBE]http://www.youtube.com/watch?v=CtunZRes4Ag&feature=related[/YOUTUBE]
Shyam - "CVkaar, aur kitne aadmi hai, ek khushi ke liye??"

Do you need a background check too???