Rejoining should refill your slot if possible

[Glamurio]

If you go cryo and rejoin, your slot should be refilled, because ending up with 8 secoffs or 3 detectives isn't really fun for anyone.

I think it should auto-remove your role after X minutes in cryo. If your slot was filled by that time, you should have to head to the HoP to get a new job. This makes sense in-lore reasoning because NT thinks you're easily replaceable, but also from a player perspective, since hogging slots for jobs is not fun.