Statistical Overdueness
Below is an attempt to sort the girls still missing limited cards in the current rotation by an experimental statistical weighted overdueness algorithm.
This algorithm takes into account the recency of any UR of that girl and the recency of their last limited card, rating this against all girls. The weight is adjusted by the frequency of releases by group in the most recent limited banners and finally by whether they have already received a card in the current rotation. The girl considered the most overdue is first in the list.