So, at the beginning of Legion, they realized the Bonus Objectives from WoD were well received, and so they developed the WQ system. Now, WQs are not without flaws, but having been playing since WotLK, it's a nice change. Suramar had small upkeep quests, but was mostly WQs, too. In the FAQ panel for Shadowlands, they announced updates to the WQ system they're calling World Quests 2.0, but have not been elaborated on since.
So, why, pray tell, did they go back to dailies for 8.3 content?
And why did they make the dailies so ridiculous to do?
Find 3 chests that respawn irregularly in a rather large area, that can despawn WHILE YOU ARE USING THEM
Find 3 rares which is impossible to do in Warmode, as they are all either dead, or take long enough for the opposing faction to find and kill you.
And on non-Warmode, have generally a ton of health and are unlikely to solo, but it takes forever for anybody to actually show up to help.
These kinds of quests have traditionally been WQs. You have the 6 chest Mechagon WQ. You have the multitudes of "Kill 'x' Rare". So why make unnecessary dailies for 8.3 N'zoth Assaults?