Originally Posted by
UndedoKoleda
Legion introduced a lot of new stuff/systems. The very fact that they were new made them interesting.
New Class
Mythic Plus for Dungeons
World Quests + Emissaries
Artifact Weapons (unique for every single spec)
Class Halls (unique for every class)
Non-linear questing(you pick the order of the zones you level in)
PvP Prestige Ranks + rewards
Legiondaries(which, IMO, was a failure overall)
Mage Tower
Allied Races(even tho they required pre-purchasing BFA, I still consider them Legion feat, given that the lore of the races was entirely Legion-centered and so were the requirements for their unlocking).
+
Story and Involvement, all around you could see important(even some Legendary) Lore figures working with you, and even recruit them as followers.
Now Battle For Azeroth continued with most of these systems, but instead of improving them, it actually somehow made some of them worse.
New Allied races - that turned out Ok.
Mythic Plus for Dungeons - kept the same level, no complaints.
World Quests - same again, no complaints.
Artifact Gear- that one is questionable, Blizzard did not get rid of the grind for AP that most of the playerbase hated, even screwed it more at some point(I remember at the start, when people couldn't use the inner Azerite Traits, because their neck wasn't high enough level). The good thing is, that you now have to gather AP for only one item instead of 2-4(depending on how many specs the class has), the bad thing was that the Traits were still poorly balanced between themselves. Another minus is that you cannot customize the appearance of your neck the way you did with the weapons. Not to forget the Essences and Alts. So overall for me its a step down compared to Legion.
Class Halls- Replaced with War Campaign, which is not even close in quality, we get 2(Horde and Alliance) instead of 12. Overall a big step down.
Questing - Basically you were tied to the 3 zones of your faction + 3 mini campaigns in the enemy faction's zones. IMO, a little step down compared to Legion, but nothing serious.
PvP Prestige - They made it account wide(good) with the very same rewards from Legion(bad).
Legiondaries - Removed them entirely, which is great.
Mage Tower- We got Horrific Visions instead, which doesn't give every single spec a new and unique transmog, but can drop gear instead, so it evens it out, IMO.
Something else that BFA did different than Legion, is that it also cut the number of armor appearances available to the players. In every other expansion we had different one for each class every tier, now we have one for every armor type - DKs, Warriors and Paladins share one, etc. Which is a HUGE letdown.
Island Expeditions- Looked great on paper, but in reality got really boring, really fast. It's just the scenarios we had since MOP, with a twist. They have many pets/mounts/transmogs tied to them tho, which is nice, overall.
Warfronts- They are nothing like what they were announced to be. We were supposed to participate in a mix of an old school RTS kind of gameplay with some M+ elemets, something completely new. Instead it ended up being raid-wide scenarios from MOP. For one of the main selling points of the expansion, it's absolutely not worth it.