7.2 added the Broken shore and even the quest campaign was kinda meh at the time(Broken Shore technically was already there due to the very good intro to Legion. World quests are nice and all that(With the daily timer instead of every 3 days). Then there was nethershard farming and I think the Legion invasions so that was nice. 7.3 did add Argus and that was a lot and such but it does need more. Personally the invasion system should be more evergreen, they could use for more then just the expansion's theme.Legion didn’t have much going on before 7.3… sorry?
The player power isn't a thing anymore and World Quests aren't daily anymore(Sadly). The Hunts could be improved though.For world content? Absolutely. It just forced you to repeat same dailies for player power. And since then they are adding more and more world content with every expac.
On Night elf Appearence: They look fine, I'm all more for face variations but I think people are being too critical of the new models.