It would be good if omi and naina marry then omi will tell her about his ex goldie and her sister gursheel and thier conniving schemes and how they are always up to something. this way naina will be saved from goldie and gursheel trying to ruin her too.
It will be an interesting track if this happens.
and also naina sounds like she would settle in really well with the narang parivar and bebo and naina will like each other alot and become friends. And this way naina can find out manji truth and help bebo out. and prevent manji from getting too close to ambo. she can be like a private detective with bebo and amrit and omi and everyone.