@Veshv I think the PFD was swept into the ACIA, which was supposed to be Kakerou's policing organization separate from their game referee system.
However, now that the ranking system was given meaning again, I'm not sure why they didn't all just move up a number, but I guess that's just how their system works. The numbers are kinda meaningful and if he was really unworthy as #2, he could/would have lost it quickly.
We should get a sight of what happened after he 'died'. We have to see some kind of aftermath after their leader went missing after all.