I gotta join the Aurum Vale -hating bandwagon here.

First room has ridiculous facepulling issues with the mob aggro. Mobs hit generally hard. Mobs have a ton of HP. People can be inconsistent with the bosses (yeah, I know, more of a player-flaw than a design-flaw). The dungeon generally takes long to do, or at least if feels long. I don't like the dungeon thematically what with the Morbols and all kinds of poisonous swamp-mobs and stuff. The color scheme of the dungeon hurts my eyes in the first room. And finally and most importantly - the fact you sync to level 49, meaning you miss out on so many pivotal level 50 abilities. No Flare, no Storm's Eye, no Medica II - and the list goes on.

Bonus hate-points for myself having PTSD from having done the crappy dungeon so many times for the Zeta drop (back in ARR). I had generally godly luck on my 1st Zeta apart from Hullbreaker and AV - the worst combo ever..