Isn't it the other way around? She was a tag wrangler before she was a Yuletide mod. Astolat, elynross, and tzikeh handed Yuletide over to hhertzof and Morbane in 2013, but hhertzof was part of the AO3 volunteer staff since AO3 began. I have no idea how long hhertzof and qem have been head wranglers.