Oh my God! You just give great idea! Wow!
I'll love if Riya herself steps back away from marriage.
Yea i would advice Avni to do something like that Riya will feel Neil is not from him.
She has only one hope right know which is Riya because Neil is just curious so he'll not break his alliance unless Shweta ji do some emotional blackmailing but it's very weak thought as Shweta loves his tillu so maybe for him she can be agreed for marriage.
So my vote goes to Riya.
It will be interesting to see how Avni let Riya think that Neil is not good for her, neither financially nor family understanding or Avni let her think that you are so beautiful you can get everything whatever so yea it can be possible.
My vote is not for bride swapping as it's can't be possible. Why she want to break alliance? For making Dayawanti suffer by being her so beloved so why will she herself make her image spoilt in front of Dayawanti and Aman. She can't do this.
Mehtas even can't do this because if they will break so how they will survive from bankruptcy.
So my all hopes are on Riya