I agree, 8.1 has to hit in november or earlier or bfa will fall apart as wod did.
Things are already starting to get boring and because there are no fun gear rewards, people wont be doing mythic+ as much as they did in legion.
The azerite traits are boring, there are no tier sets. And while legiondaries had a horrible reward structure, they were interesting and kept people playing and running mythic+ to get them.
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7.1 launched before blizzcon and had a lot of new world content with the falcasour world quest that could get u 4 mounts, the Helya invasion quests + world quests leading up to the Helya raid, Suramar weekly insurection campaign
the Karazhan attunement quests and most importantly:
a new 8 boss mythic only dungeon Return to Karazhan that was actually really hard when it launched, and if u completed it within a certain time u got access to a 9th boss, dropping almost mythic EN quality gear (870) and a guaranteed mount.
Believe me, that was what kept me playing until Nighthold unlocks and for me it was the best time in legion.
You had EN to do, ToV to do and Kara to do.