The 20 hour reset for the Premium Undaunted reward (purple and high xp - and event goodie box) is very frustrating!
I don't understand why it wouldn't be simpler to just have it reset with the daily resets. Everyone still gets to run once a day but they could run late one day and early the next or whatever works best in their schedule without having to worry about their rewards being reset or not.
Please change the Random Dungeon to reset daily with the pledges/writs/daily quests!