Optional Play Systems
Dragonflight zones have a ton of endgame content, equivalent to “four Zereth Mortises”
One thing that's been obviously a problem in World of Warcraft over the years is the lack of content that remains relevant once you're at max level for an expansion -- unless there's a dungeon or raid in an area, you don't really spend a lot of time in those zones once you're done leveling through them.
