I know we need Pia to be creating trouble (that is her mandate as per Ekta). One way of neutalizing her as a threat to JB marriage is I think to get her married to Sahil. THis was she can come to live in WM and create havoc with Jigz but not be a love interest for JW.
Pia will get her dream of a life of luxury. She gets to plot taking over JW's property. Our couple is left to do JDD.
cheers,
Meghna