Of the 4/6 zones we’ve seen so far, the Alliance has gotten the very short end of the stick in regards to the importance of the questing.
In Drustvar, the entirety of the zone is dealing with the Witch Coven and the Drust. There is not a single thing in the zone that would suggest that this story will matter in BFA outside of the zone. It’s nice to see them introducing new lore but they really should’ve connected them with the rest of the story somehow.
Tiragarde Sound may have a relevant plot line in Lady Ashvane and House Ashvane, but the zone concentrates just too little on them. Only about 30 minutes of questing is actually significant probably.
On the Horde though, in Nazmir you deal with loas, including Bwomsamdi who may play a big role. This is also where most of the character development of Talanji occurs who likely will be around the Horde for a long time. Then there also is the overarching theme of G’huun who is some form of Old God and parts of the raid are related to N’zoth. So that’s obviously huge.
Zuldazar fleshes out Zul a lot. And he’s been around for a very long time. It also connects Zul to Azshara for the first time which can possibly be a huge plotline later on. And probably will be.
So I’m just not seeing how the Alliance zones as currently constructed can compare.