This clip whereby Elizabeth Vargas is interviewed about the series, she describes each episode will be from the perspective of one member who recently extricated themself from the group being discussed. There is probably enough information for any of those groups being investigated, to fill numerous hours of programming.
Romy was likely chosen as her child molestation situation would probably have broader interest to the general viewing public whereas an in-depth on shunning or loses due to blood doctrine may have lesser interest.
Having gone from NO programs about JWs now to this one plus anticipating the Leah Remini episode yet to come I think is positive and more than any of us hoped for when watching Leah's show last year.
Perhaps if a significant number write in appreciation to A&E for this episode, might cause them to consider producing a further episode from a different perspective.