Raavi is the only bahu who is well balanced b/w being emotional and being practical. She looks from the dimensions and then suggests anything. Both the other bahus are at extreme ends. This time they should actually make Raavi taking things at her hands and acts like a bridge b/w these two, but that will happen only when Dhara stops poking her nose in every thing.
As far as I remember, Prema di told that in the og Mullai has many times balanced b/w Dhanam and Meena (, I hope I got the names right) that would be a nice thing to see even if they want to extend this family track