I'd like to show a listing of Playa child entries (child's title + a few custom fields), ordered by their total_parents (total number of parent entries associated with the child entry). The child entry with the most parents would be at the top of the list; the child entry with the fewest parents would be at the bottom.
I've looked through the Playa docs, EE StackExchange, and old P&T support site at Get Satisfaction. But I've had no luck so far. I suspect I've overlooked something obvious, or am off track in thinking about the problem.
I would really appreciate suggestions on how you would approach this issue. Thanks!