I can't do the shortened prefixes for AO3 reasons. You see, if someone nominates WB: Bespin gas extraction (OT) in the character slot for Space Swap, then someone trying to nominate the same thing for Worldbuilding Exchange, which uses the relationship slot for worldbuilding noms, would have their tag reformatted to the extremely ugly WB: Bespin gas extraction (OT) - Relationship. I'm not going to screw over another mod's tagset like that. WB: Worldbuilding will only happen if we transition into using the relationship slot.

All tags need to be approved. However, if they're not canonical, I also need to go to a separate tab on the tagset and approve the association of the tag to the fandom. Sometimes AO3 loses the association when I'm approving stuff. It is extremely annoying.