With unique questlines mixed with dungeons and stuff. I liked a lot.
Thing is, for everyone who liked it a lot, there's one who hated that stuff. Anecdotal evidence: the mother of a former guildmate lives for tradeskills. She's got a stable of characters for every tradeskill and enjoy primarily farming, crafting, selling.
She hates dungeons. She has not completed a single class hall campaign, on any character, because she's stopped at every dungeon quest. She's does not have any alchemy recipe beyond the first three. She's got basic tailoring, no advanced recipes. Etc.
During Draenor, you'd see her every day for a couple hours gathering and stuff. During Legion, she pretty much stopped logging in after 7 months, when she stopped hoping that maybe the thing would be nerfed, and there would be alternate acquisition quests.
She's inquired if BfA is featuring the same and she can come back. Because that's a hard pass, WoW over, in that case.
While it's not crafting in particular, the problem with Legion was that EVERYTHING was gated thru dungeons. If you did not want to play in dungeons at least some, the expansion was a complete dead end. You could unlock WQ, and that's the only form of gameplay that was available. You couldn't complete any important feature set without a handful of dungeons.