The last 3 episodes were beautiful bcos they were "LAST 3 EPISODES."
Had the story extended, Sonali would have been still lurking around as Mrs. Nikhil Jaisingh.
Makers would be still wondering whether to make Badal the adopted kid or bring in a 6th kid. Ranveer would have continued to pester Pallavi.
Or we would have headed toward a bigger leap of a few years during which she becomes successful, but her entire family starts hating her for abandoning them. All 5 will do "Ms Pallavi Gulati."
And our trolling saga would have kept continuing.