I want the after seperation to be different than what happened in KD mainly because Virat has realised his feelings. I am not very good at penning down and explaning ideas but I will try to write it.
1. After Devkit's marriage, as we know confrontation and seperation is going to happen. I want only the C-gang to ask Sai to leave. Hope Virat doesn't say any mean things but doesn't ask her to stay as well.
2. After Virat comes to know the truth (except the kidnapping) I want him to bring back Sai but only for his farz and because she tried to do a good deed. I want him to convey this to her that he is apologizing only for thinking Pulkit is wrong.
3. Him to remain angry with her because she broke his trust and didn't confide in him. I don't want Virat to forget this for sometime.
4.Sai refusing to go with back him . She starts living in hostel.
5. Both of them missing each other but not saying anything to each other. - Sai not comimg back because she thinks Virat is only asking her to come back for farz but she really starts to miss his presence.
6. I don't want the mission part like KD, Virat getting injured and both of them forgetting everything & moving on because I think both of them deserves apology from each other.
7. I want Sai to be back to Chavan House because of some other reason may be to take care of Ashwini as she is not well and she asks for Sai. Virat goes to her hostel to bring her back and she agrees.
8. During her stay in Chavan house she also realises that she has romantic feelings towards him. I don't want any of them to confess to each other for sometime. I would like see some major angst. They can show both of them are attracted and attached to each other.
I don't know I thought may be this could work.