Maybe they're trying to minimize the number of hours needed to go through the cases yet to be decided. So whenever some free time comes up, they're able to go t

Maybe they're trying to minimize the number of hours needed to go through the cases yet to be decided. So whenever some free time comes up, they're able to go through that backlog easily. It could also be that, just as in medicine, harder cases are more relevant than easier cases. If the amount of effort each side puts into their case has any positive relationship with the value with what is at stake, solving harder cases first would free up whatever is at stake and make it available to society again.