Sanjana, we don't necessarily want SAAZ marriage but we prefer it any day to Zaki-zoo marriage. Yeah it would be great if Cvs showed what conspired between Zeenat and Sahir and what makes him so rigid and self destructive coz of that. Based on that information Arzoo could take a call on whether she wants to be his wife or not.
As for her being not wanting to be a second wife, there is a difference between the two situations. Her father married another woman because his first wife could not have sons and left his small kids and old mother to fend for themselves, all alone and without financial aid. Yes Arzoo would hate to be a second wife to anyone but in this case getting a divorce is a cakewalk, wonder why the Cvs aren't showing that. He can still take revenge on Zeenat by showing he is a big name in the business world when she wakes up, but that doesn't mean he has to stay married to her for that.
If he can;t divorce his first wife, then too as a muslim, he can marry again. N here the Cvs are showing Zeenat as a gold digger or as someone who betrayed him, but even if she had been a normal nice wife, I can tell you that in the real world, with a 7 yr in coma wife, the guy would have married much earlier with his family's blessing. If you remember Kurti apa praises him for the very reason, saying someone else would have done a second nikah but you have waited all these years for her to wake up.
That is why Zaki is in a hurry, He knows that the tide can turn anytime and if in a moment of weakness Arzoo says yes to Sahir, nothing will stop him from marrying her. Thats why he is playing the main bhi victim and the friendship wait forever card with Arzoo hoping she will say yes to him instead. Lets see how it pans out, in the end SAAZ will get married but its sad that they have to get married first and then heal each other later.