When an avatar has to be moved to a hub because they cannot be in the region they are otherwise meant to be in (for example, because it is offline when they are trying to log in), they should only be moved to a hub that matches the content rating of the original region. For example, if they are trying to log into an A-rated region and can’t go there, they should not be dumped into a G-rated hub.
The reason for this is because when you move someone to a different content rating without warning them, you can’t expect them to be dressed appropriately for the new rating.
I saw a rather sizable crowd of people at a landing point of a hub during the weekly rolling restarts. They were a mix of naked, bruised, bloody adult avis covered in BDSM gear and child avatars who had been dumped in from somewhere else. Many of them were AFK because they had pressed the log-in button and left to go do something else while they waited to rez in. I have since learned that this is a routine problem that hubs have to deal with. It is not a mess that can be cleaned up instantly and there is no reason why it has to be happening in the first place.