There's always the ever present issue of mid-dungeon cutscenes, which the Keeper of the Lake, Aery, and Aetherochemical Research Facility largely corrected. More pressingly though, speed-running is still an issue. Despite the fact EXP was added to level 50 dungeons, for whatever reason the standard procedure is to sac pull the section before the second teleporter. Which is totally asinine and frankly seems like a scrub behavior. And sometimes, if you still have aggro from them, they can attack you though the walls at the Magitek Reaper.

It would be great if they could revamp the dungeons to address the issues, or at least make it impossible to skip all the enemies. There's no delicate way to put this, but speedrunners are bad players, like ice mages or tanks not using defensive cooldowns.