Well he is only being made deputy qazi for now, plus I hope Salma puts forth the condition she had suggested earlier about getting Rukhsar married off BEFORE making Kabeer qazi. Hope CVs haven't forgotten about this!
I think Zara is very smart, she's onto Rukhsar and knows she wants to seperate her from her husband so I don't think Zara will fall for Rukhsar's chaal. This is only unless, like you said, Rukhsar has some sort of solid proof. But even then I feel like, because our leads have been shown to be so intelligent, it's going to take something major to get them to misunderstand each other.
I don't think either of them will want to willingly divorce. I just don't see that happening, unless CVs suddenly decide to change their leads' characterizations. Because as of now, and especially from last two episodes, we have seen they both want to be together forever and fulfill the vows of their nikah. But if it does come to divorce, since this show was a little about triple talaq, wouldn't it be Kabeer giving the divorce? Maybe they will find a loophole in the nikahnamma? I hope not tho. I also believe the Peer Sahib won't let it happen.
I agree with you Siraj will be coming back, but I read an article which said he might be Kabeer's step-brother (also he has same last name - Ahmed). So now I can't stop thinking about this possibility. And then he and Rukhsar might plan together to separate ZaBeer somehow? 😕
Btw I have written all my ideas and assumptions above believing that CVs will not butcher any characters. Because so far, we are very VERY lucky to have such sensible leads 😆